diff --git a/src/panel-triggers/components/AlertList/AlertCard.tsx b/src/panel-triggers/components/AlertList/AlertCard.tsx
index d5c265a..46d9dd1 100644
--- a/src/panel-triggers/components/AlertList/AlertCard.tsx
+++ b/src/panel-triggers/components/AlertList/AlertCard.tsx
@@ -56,6 +56,7 @@ export default class AlertCard extends PureComponent<AlertCardProps, AlertCardSt
 
   render() {
     const { problem, panelOptions } = this.props;
+    const showDatasourceName = panelOptions.targets && panelOptions.targets.length > 1;
     const cardClass = classNames('alert-rule-item', 'zbx-trigger-card', { 'zbx-trigger-highlighted': panelOptions.highlightBackground });
     const descriptionClass = classNames('alert-rule-item__text', { 'zbx-description--newline': panelOptions.descriptionAtNewLine });
     const severityDesc = _.find(panelOptions.triggerSeverity, s => s.priority === Number(problem.priority));
@@ -134,7 +135,7 @@ export default class AlertCard extends PureComponent<AlertCardProps, AlertCardSt
           </div>
         </div>
 
-        {panelOptions.datasources.length > 1 && (
+        {showDatasourceName && (
           <div className="alert-rule-item__time zabbix-trigger-source">
             <span>
               <i className="fa fa-database"></i>
diff --git a/src/panel-triggers/components/AlertList/AlertList.tsx b/src/panel-triggers/components/AlertList/AlertList.tsx
index e893bbd..8d1d08b 100644
--- a/src/panel-triggers/components/AlertList/AlertList.tsx
+++ b/src/panel-triggers/components/AlertList/AlertList.tsx
@@ -68,7 +68,7 @@ export default class AlertList extends PureComponent<AlertListProps, AlertListSt
           <ol className={alertListClass}>
             {currentProblems.map(problem =>
               <AlertCard
-                key={problem.triggerid}
+                key={`${problem.triggerid}-${problem.datasource}`}
                 problem={problem}
                 panelOptions={panelOptions}
                 onTagClick={this.handleTagClick}
diff --git a/src/panel-triggers/migrations.js b/src/panel-triggers/migrations.ts
similarity index 62%
rename from src/panel-triggers/migrations.js
rename to src/panel-triggers/migrations.ts
index ce7c67d..f929160 100644
--- a/src/panel-triggers/migrations.js
+++ b/src/panel-triggers/migrations.ts
@@ -1,8 +1,9 @@
 import _ from 'lodash';
+import { getNextRefIdChar } from './utils';
 import { getDefaultTarget } from './triggers_panel_ctrl';
 
 // Actual schema version
-export const CURRENT_SCHEMA_VERSION = 6;
+export const CURRENT_SCHEMA_VERSION = 7;
 
 export function migratePanelSchema(panel) {
   if (isEmptyPanel(panel)) {
@@ -45,6 +46,26 @@ export function migratePanelSchema(panel) {
     }
   }
 
+  if (schemaVersion < 7) {
+    const updatedTargets = [];
+    for (const targetKey in panel.targets) {
+      const target = panel.targets[targetKey];
+      if (!isEmptyTarget(target) && !isInvalidTarget(target, targetKey)) {
+        updatedTargets.push({
+          ...target,
+          datasource: targetKey,
+        });
+      }
+    }
+    for (const target of updatedTargets) {
+      if (!target.refId) {
+        target.refId = getNextRefIdChar(updatedTargets);
+      }
+    }
+    panel.targets = updatedTargets;
+    delete panel.datasources;
+  }
+
   return panel;
 }
 
@@ -59,3 +80,11 @@ function isEmptyPanel(panel) {
 function isEmptyTargets(targets) {
   return !targets || (_.isArray(targets) && (targets.length === 0 || targets.length === 1 && _.isEmpty(targets[0])));
 }
+
+function isEmptyTarget(target) {
+  return !target || !(target.group && target.host && target.application && target.trigger);
+}
+
+function isInvalidTarget(target, targetKey) {
+  return target && target.refId === 'A' && targetKey === '0';
+}
diff --git a/src/panel-triggers/partials/triggers_tab.html b/src/panel-triggers/partials/triggers_tab.html
index ad0dec0..e7df9fe 100644
--- a/src/panel-triggers/partials/triggers_tab.html
+++ b/src/panel-triggers/partials/triggers_tab.html
@@ -6,7 +6,7 @@
       </div>
       <div class="gf-form">
         <datasource-selector
-          datasources="ctrl.panel.datasources"
+          datasources="editor.selectedDatasources"
           options="editor.panelCtrl.available_datasources"
           on-change="editor.datasourcesChanged()">
         </datasource-selector>
@@ -15,50 +15,50 @@
   </div>
 </div>
 
-<div class="editor-row" ng-repeat="ds in ctrl.panel.datasources">
+<div class="editor-row" ng-repeat="target in ctrl.panel.targets">
   <div class="section gf-form-group">
-    <h5 class="section-heading">{{ ds }}</h5>
+    <h5 class="section-heading">{{ target.datasource }}</h5>
     <div class="gf-form-inline">
       <div class="gf-form">
         <label class="gf-form-label query-keyword width-7">Group</label>
         <input type="text"
-          ng-model="ctrl.panel.targets[ds].group.filter"
-          bs-typeahead="editor.getGroupNames[ds]"
+          ng-model="target.group.filter"
+          bs-typeahead="editor.getGroupNames[target.datasource]"
           ng-blur="editor.parseTarget()"
           data-min-length=0
           data-items=100
           class="gf-form-input width-14"
           ng-class="{
-            'zbx-variable': editor.isVariable(ctrl.panel.targets[ds].group.filter),
-            'zbx-regex': editor.isRegex(ctrl.panel.targets[ds].group.filter)
+            'zbx-variable': editor.isVariable(target.group.filter),
+            'zbx-regex': editor.isRegex(target.group.filter)
           }">
       </div>
       <div class="gf-form">
         <label class="gf-form-label query-keyword width-7">Host</label>
         <input type="text"
-          ng-model="ctrl.panel.targets[ds].host.filter"
-          bs-typeahead="editor.getHostNames[ds]"
+          ng-model="target.host.filter"
+          bs-typeahead="editor.getHostNames[target.datasource]"
           ng-blur="editor.parseTarget()"
           data-min-length=0
           data-items=100
           class="gf-form-input width-14"
           ng-class="{
-            'zbx-variable': editor.isVariable(ctrl.panel.targets[ds].host.filter),
-            'zbx-regex': editor.isRegex(ctrl.panel.targets[ds].host.filter)
+            'zbx-variable': editor.isVariable(target.host.filter),
+            'zbx-regex': editor.isRegex(target.host.filter)
           }">
       </div>
       <div class="gf-form">
         <label class="gf-form-label query-keyword width-7">Proxy</label>
         <input type="text"
-          ng-model="ctrl.panel.targets[ds].proxy.filter"
-          bs-typeahead="editor.getProxyNames[ds]"
+          ng-model="target.proxy.filter"
+          bs-typeahead="editor.getProxyNames[target.datasource]"
           ng-blur="editor.parseTarget()"
           data-min-length=0
           data-items=100
           class="gf-form-input width-14"
           ng-class="{
-            'zbx-variable': editor.isVariable(ctrl.panel.targets[ds].proxy.filter),
-            'zbx-regex': editor.isRegex(ctrl.panel.targets[ds].proxy.filter)
+            'zbx-variable': editor.isVariable(target.proxy.filter),
+            'zbx-regex': editor.isRegex(target.proxy.filter)
           }">
       </div>
     </div>
@@ -67,35 +67,35 @@
       <div class="gf-form">
         <label class="gf-form-label query-keyword width-7">Application</label>
         <input type="text"
-          ng-model="ctrl.panel.targets[ds].application.filter"
-          bs-typeahead="editor.getApplicationNames[ds]"
+          ng-model="target.application.filter"
+          bs-typeahead="editor.getApplicationNames[target.datasource]"
           ng-blur="editor.parseTarget()"
           data-min-length=0
           data-items=100
           class="gf-form-input width-14"
           ng-class="{
-            'zbx-variable': editor.isVariable(ctrl.panel.targets[ds].application.filter),
-            'zbx-regex': editor.isRegex(ctrl.panel.targets[ds].application.filter)
+            'zbx-variable': editor.isVariable(target.application.filter),
+            'zbx-regex': editor.isRegex(target.application.filter)
           }">
       </div>
       <div class="gf-form">
         <label class="gf-form-label query-keyword width-7">Trigger</label>
         <input type="text"
-          ng-model="ctrl.panel.targets[ds].trigger.filter"
+          ng-model="target.trigger.filter"
           ng-blur="editor.parseTarget()"
           placeholder="trigger name"
           class="gf-form-input width-14"
-          ng-style="ctrl.panel.targets[ds].trigger.style"
+          ng-style="target.trigger.style"
           ng-class="{
-            'zbx-variable': editor.isVariable(ctrl.panel.targets[ds].trigger.filter),
-            'zbx-regex': editor.isRegex(ctrl.panel.targets[ds].trigger.filter)
+            'zbx-variable': editor.isVariable(target.trigger.filter),
+            'zbx-regex': editor.isRegex(target.trigger.filter)
           }"
           empty-to-null>
       </div>
       <div class="gf-form">
         <label class="gf-form-label query-keyword width-7">Tags</label>
         <input type="text" class="gf-form-input width-14"
-          ng-model="ctrl.panel.targets[ds].tags.filter"
+          ng-model="target.tags.filter"
           ng-blur="editor.parseTarget()"
           placeholder="tag1:value1, tag2:value2">
       </div>
diff --git a/src/panel-triggers/specs/migrations.spec.js b/src/panel-triggers/specs/migrations.spec.ts
similarity index 76%
rename from src/panel-triggers/specs/migrations.spec.js
rename to src/panel-triggers/specs/migrations.spec.ts
index f411350..bd916e8 100644
--- a/src/panel-triggers/specs/migrations.spec.js
+++ b/src/panel-triggers/specs/migrations.spec.ts
@@ -5,16 +5,16 @@ import {DEFAULT_TARGET, DEFAULT_SEVERITY, PANEL_DEFAULTS} from '../triggers_pane
 import {CURRENT_SCHEMA_VERSION} from '../migrations';
 
 describe('Triggers Panel schema migration', () => {
-  let ctx = {};
+  let ctx: any = {};
   let updatePanelCtrl;
-  let datasourceSrvMock = {
+  const datasourceSrvMock = {
     getMetricSources: () => {
       return [{ meta: {id: 'alexanderzobnin-zabbix-datasource'}, value: {}, name: 'zabbix_default' }];
     },
     get: () => Promise.resolve({})
   };
 
-  let timeoutMock = () => {};
+  const timeoutMock = () => {};
 
   beforeEach(() => {
     ctx = {
@@ -47,14 +47,16 @@ describe('Triggers Panel schema migration', () => {
   });
 
   it('should update old panel schema', () => {
-    let updatedPanelCtrl = updatePanelCtrl(ctx.scope);
+    const updatedPanelCtrl = updatePanelCtrl(ctx.scope);
 
-    let expected = _.defaultsDeep({
+    const expected = _.defaultsDeep({
       schemaVersion: CURRENT_SCHEMA_VERSION,
-      datasources: ['zabbix'],
-      targets: {
-        'zabbix': DEFAULT_TARGET
-      },
+      targets: [
+        {
+          ...DEFAULT_TARGET,
+          datasource: 'zabbix',
+        }
+      ],
       ageField: true,
       statusField: false,
       severityField: false,
@@ -68,29 +70,29 @@ describe('Triggers Panel schema migration', () => {
 
   it('should create new panel with default schema', () => {
     ctx.scope.panel = {};
-    let updatedPanelCtrl = updatePanelCtrl(ctx.scope);
+    const updatedPanelCtrl = updatePanelCtrl(ctx.scope);
 
-    let expected = _.defaultsDeep({
+    const expected = _.defaultsDeep({
       schemaVersion: CURRENT_SCHEMA_VERSION,
-      datasources: ['zabbix_default'],
-      targets: {
-        'zabbix_default': DEFAULT_TARGET
-      }
+      targets: [{
+        ...DEFAULT_TARGET,
+        datasource: 'zabbix_default'
+      }]
     }, PANEL_DEFAULTS);
     expect(updatedPanelCtrl.panel).toEqual(expected);
   });
 
   it('should set default targets for new panel with empty targets', () => {
     ctx.scope.panel = {
-      targets: [{}]
+      targets: []
     };
-    let updatedPanelCtrl = updatePanelCtrl(ctx.scope);
+    const updatedPanelCtrl = updatePanelCtrl(ctx.scope);
 
-    let expected = _.defaultsDeep({
-      datasources: ['zabbix_default'],
-      targets: {
-        'zabbix_default': DEFAULT_TARGET
-      },
+    const expected = _.defaultsDeep({
+      targets: [{
+        ...DEFAULT_TARGET,
+        datasource: 'zabbix_default'
+      }]
     }, PANEL_DEFAULTS);
 
     expect(updatedPanelCtrl.panel).toEqual(expected);
diff --git a/src/panel-triggers/specs/panel_ctrl.spec.js b/src/panel-triggers/specs/panel_ctrl.spec.ts
similarity index 84%
rename from src/panel-triggers/specs/panel_ctrl.spec.js
rename to src/panel-triggers/specs/panel_ctrl.spec.ts
index bdfa90b..67283c9 100644
--- a/src/panel-triggers/specs/panel_ctrl.spec.js
+++ b/src/panel-triggers/specs/panel_ctrl.spec.ts
@@ -5,9 +5,9 @@ import {PANEL_DEFAULTS, DEFAULT_TARGET} from '../triggers_panel_ctrl';
 // import { create } from 'domain';
 
 describe('TriggerPanelCtrl', () => {
-  let ctx = {};
+  let ctx: any = {};
   let datasourceSrvMock, zabbixDSMock;
-  let timeoutMock = () => {};
+  const timeoutMock = () => {};
   let createPanelCtrl;
 
   beforeEach(() => {
@@ -61,7 +61,7 @@ describe('TriggerPanelCtrl', () => {
   describe('When adding new panel', () => {
     it('should suggest all zabbix data sources', () => {
       ctx.scope.panel = {};
-      let panelCtrl = createPanelCtrl();
+      const panelCtrl = createPanelCtrl();
       expect(panelCtrl.available_datasources).toEqual([
         'zabbix_default', 'zabbix'
       ]);
@@ -69,10 +69,8 @@ describe('TriggerPanelCtrl', () => {
 
     it('should load first zabbix data source as default', () => {
       ctx.scope.panel = {};
-      let panelCtrl = createPanelCtrl();
-      expect(panelCtrl.panel.datasources).toEqual([
-        'zabbix_default'
-      ]);
+      const panelCtrl = createPanelCtrl();
+      expect(panelCtrl.panel.targets[0].datasource).toEqual('zabbix_default');
     });
 
     it('should rewrite default empty target', () => {
@@ -82,7 +80,7 @@ describe('TriggerPanelCtrl', () => {
           "refId": "A"
         }],
       };
-      let panelCtrl = createPanelCtrl();
+      const panelCtrl = createPanelCtrl();
       expect(panelCtrl.available_datasources).toEqual([
         'zabbix_default', 'zabbix'
       ]);
@@ -92,16 +90,22 @@ describe('TriggerPanelCtrl', () => {
   describe('When refreshing panel', () => {
     beforeEach(() => {
       ctx.scope.panel.datasources = ['zabbix_default', 'zabbix'];
-      ctx.scope.panel.targets = {
-        'zabbix_default': DEFAULT_TARGET,
-        'zabbix': DEFAULT_TARGET
-      };
+      ctx.scope.panel.targets = [
+        {
+          ...DEFAULT_TARGET,
+          datasource: 'zabbix_default'
+        },
+        {
+          ...DEFAULT_TARGET,
+          datasource: 'zabbix'
+        },
+      ];
       ctx.panelCtrl = createPanelCtrl();
     });
 
     it('should format triggers', (done) => {
       ctx.panelCtrl.onRefresh().then(() => {
-        let formattedTrigger = _.find(ctx.panelCtrl.triggerList, {triggerid: "1"});
+        const formattedTrigger: any = _.find(ctx.panelCtrl.triggerList, {triggerid: "1"});
         expect(formattedTrigger.host).toBe('backend01');
         expect(formattedTrigger.hostTechName).toBe('backend01_tech');
         expect(formattedTrigger.datasource).toBe('zabbix_default');
@@ -113,7 +117,7 @@ describe('TriggerPanelCtrl', () => {
 
     it('should sort triggers by time by default', (done) => {
       ctx.panelCtrl.onRefresh().then(() => {
-        let trigger_ids = _.map(ctx.panelCtrl.triggerList, 'triggerid');
+        const trigger_ids = _.map(ctx.panelCtrl.triggerList, 'triggerid');
         expect(trigger_ids).toEqual([
           '2', '4', '3', '1'
         ]);
@@ -124,7 +128,7 @@ describe('TriggerPanelCtrl', () => {
     it('should sort triggers by severity', (done) => {
       ctx.panelCtrl.panel.sortTriggersBy = { text: 'severity', value: 'priority' };
       ctx.panelCtrl.onRefresh().then(() => {
-        let trigger_ids = _.map(ctx.panelCtrl.triggerList, 'triggerid');
+        const trigger_ids = _.map(ctx.panelCtrl.triggerList, 'triggerid');
         expect(trigger_ids).toEqual([
           '1', '3', '2', '4'
         ]);
@@ -134,7 +138,7 @@ describe('TriggerPanelCtrl', () => {
 
     it('should add acknowledges to trigger', (done) => {
       ctx.panelCtrl.onRefresh().then(() => {
-        let trigger = getTriggerById(1, ctx);
+        const trigger = getTriggerById(1, ctx);
         expect(trigger.acknowledges).toHaveLength(1);
         expect(trigger.acknowledges[0].message).toBe("event ack");
 
@@ -153,15 +157,15 @@ describe('TriggerPanelCtrl', () => {
 
     it('should handle new lines in trigger description', () => {
       ctx.panelCtrl.setTriggerSeverity = jest.fn((trigger) => trigger);
-      let trigger = {comments: "this is\ndescription"};
+      const trigger = {comments: "this is\ndescription"};
       const formattedTrigger = ctx.panelCtrl.formatTrigger(trigger);
       expect(formattedTrigger.comments).toBe("this is<br>description");
     });
 
     it('should format host name to display (default)', (done) => {
       ctx.panelCtrl.onRefresh().then(() => {
-        let trigger = getTriggerById(1, ctx);
-        let hostname = ctx.panelCtrl.formatHostName(trigger);
+        const trigger = getTriggerById(1, ctx);
+        const hostname = ctx.panelCtrl.formatHostName(trigger);
         expect(hostname).toBe('backend01');
         done();
       });
@@ -171,8 +175,8 @@ describe('TriggerPanelCtrl', () => {
       ctx.panelCtrl.panel.hostField = false;
       ctx.panelCtrl.panel.hostTechNameField = true;
       ctx.panelCtrl.onRefresh().then(() => {
-        let trigger = getTriggerById(1, ctx);
-        let hostname = ctx.panelCtrl.formatHostName(trigger);
+        const trigger = getTriggerById(1, ctx);
+        const hostname = ctx.panelCtrl.formatHostName(trigger);
         expect(hostname).toBe('backend01_tech');
         done();
       });
@@ -182,8 +186,8 @@ describe('TriggerPanelCtrl', () => {
       ctx.panelCtrl.panel.hostField = true;
       ctx.panelCtrl.panel.hostTechNameField = true;
       ctx.panelCtrl.onRefresh().then(() => {
-        let trigger = getTriggerById(1, ctx);
-        let hostname = ctx.panelCtrl.formatHostName(trigger);
+        const trigger = getTriggerById(1, ctx);
+        const hostname = ctx.panelCtrl.formatHostName(trigger);
         expect(hostname).toBe('backend01 (backend01_tech)');
         done();
       });
@@ -193,8 +197,8 @@ describe('TriggerPanelCtrl', () => {
       ctx.panelCtrl.panel.hostField = false;
       ctx.panelCtrl.panel.hostTechNameField = false;
       ctx.panelCtrl.onRefresh().then(() => {
-        let trigger = getTriggerById(1, ctx);
-        let hostname = ctx.panelCtrl.formatHostName(trigger);
+        const trigger = getTriggerById(1, ctx);
+        const hostname = ctx.panelCtrl.formatHostName(trigger);
         expect(hostname).toBe("");
         done();
       });
@@ -222,7 +226,7 @@ describe('TriggerPanelCtrl', () => {
   });
 });
 
-const defaultTrigger = {
+const defaultTrigger: any = {
   "triggerid": "13565",
   "value": "1",
   "groups": [{"groupid": "1", "name": "Backend"}] ,
@@ -248,7 +252,7 @@ const defaultTrigger = {
   "flags": "0", "type": "0", "items": [] , "error": ""
 };
 
-const defaultEvent = {
+const defaultEvent: any = {
   "eventid": "11",
   "acknowledges": [
     {
@@ -272,8 +276,8 @@ const defaultEvent = {
   "objectid": "1",
 };
 
-function generateTrigger(id, timestamp, severity) {
-  let trigger = _.cloneDeep(defaultTrigger);
+function generateTrigger(id, timestamp?, severity?): any {
+  const trigger = _.cloneDeep(defaultTrigger);
   trigger.triggerid = id.toString();
   if (severity) {
     trigger.priority = severity.toString();
@@ -284,13 +288,13 @@ function generateTrigger(id, timestamp, severity) {
   return trigger;
 }
 
-function createTrigger(props) {
+function createTrigger(props): any {
   let trigger = _.cloneDeep(defaultTrigger);
   trigger = _.merge(trigger, props);
   trigger.lastEvent.objectid = trigger.triggerid;
   return trigger;
 }
 
-function getTriggerById(id, ctx) {
+function getTriggerById(id, ctx): any {
   return _.find(ctx.panelCtrl.triggerList, {triggerid: id.toString()});
 }
diff --git a/src/panel-triggers/triggers_panel_ctrl.js b/src/panel-triggers/triggers_panel_ctrl.js
index d8d8247..dad0d7a 100644
--- a/src/panel-triggers/triggers_panel_ctrl.js
+++ b/src/panel-triggers/triggers_panel_ctrl.js
@@ -10,6 +10,7 @@ import { triggerPanelTriggersTab } from './triggers_tab';
 import { migratePanelSchema, CURRENT_SCHEMA_VERSION } from './migrations';
 import ProblemList from './components/Problems/Problems';
 import AlertList from './components/AlertList/AlertList';
+import { getNextRefIdChar } from './utils';
 
 const ZABBIX_DS_ID = 'alexanderzobnin-zabbix-datasource';
 const PROBLEM_EVENTS_LIMIT = 100;
@@ -23,7 +24,17 @@ export const DEFAULT_TARGET = {
   proxy: {filter: ""},
 };
 
-export const getDefaultTarget = () => DEFAULT_TARGET;
+export const getDefaultTarget = (targets) => {
+  return {
+    group: {filter: ""},
+    host: {filter: ""},
+    application: {filter: ""},
+    trigger: {filter: ""},
+    tags: {filter: ""},
+    proxy: {filter: ""},
+    refId: getNextRefIdChar(targets),
+  };
+};
 
 export const DEFAULT_SEVERITY = [
   { priority: 0, severity: 'Not classified',  color: 'rgb(108, 108, 108)', show: true},
@@ -40,8 +51,7 @@ const DEFAULT_TIME_FORMAT = "DD MMM YYYY HH:mm:ss";
 
 export const PANEL_DEFAULTS = {
   schemaVersion: CURRENT_SCHEMA_VERSION,
-  datasources: [],
-  targets: {},
+  targets: [getDefaultTarget([])],
   // Fields
   hostField: true,
   hostTechNameField: false,
@@ -108,11 +118,8 @@ export class TriggerPanelCtrl extends PanelCtrl {
     _.defaultsDeep(this.panel, _.cloneDeep(PANEL_DEFAULTS));
 
     this.available_datasources = _.map(this.getZabbixDataSources(), 'name');
-    if (this.panel.datasources.length === 0) {
-      this.panel.datasources.push(this.available_datasources[0]);
-    }
-    if (this.isEmptyTargets()) {
-      this.panel.targets[this.panel.datasources[0]] = getDefaultTarget();
+    if (this.panel.targets && !this.panel.targets[0].datasource) {
+      this.panel.targets[0].datasource = this.available_datasources[0];
     }
 
     this.initDatasources();
@@ -138,7 +145,11 @@ export class TriggerPanelCtrl extends PanelCtrl {
   }
 
   initDatasources() {
-    let promises = _.map(this.panel.datasources, (ds) => {
+    if (!this.panel.targets) {
+      return;
+    }
+    const targetDatasources = _.compact(this.panel.targets.map(target => target.datasource));
+    let promises = targetDatasources.map(ds => {
       // Load datasource
       return this.datasourceSrv.get(ds)
       .then(datasource => {
@@ -236,14 +247,15 @@ export class TriggerPanelCtrl extends PanelCtrl {
     const timeTo = Math.ceil(dateMath.parse(this.range.to) / 1000);
     const userIsEditor = this.contextSrv.isEditor || this.contextSrv.isGrafanaAdmin;
 
-    let promises = _.map(this.panel.datasources, (ds) => {
+    let promises = _.map(this.panel.targets, (target) => {
+      const ds = target.datasource;
       let proxies;
       let showAckButton = true;
       return this.datasourceSrv.get(ds)
       .then(datasource => {
         const zabbix = datasource.zabbix;
         const showEvents = this.panel.showEvents.value;
-        const triggerFilter = this.panel.targets[ds];
+        const triggerFilter = target;
         const showProxy = this.panel.hostProxy;
         const getProxiesPromise = showProxy ? zabbix.getProxies() : () => [];
         showAckButton = !datasource.disableReadOnlyUsersAck || userIsEditor;
@@ -284,8 +296,8 @@ export class TriggerPanelCtrl extends PanelCtrl {
       })
       .then(triggers => this.setMaintenanceStatus(triggers))
       .then(triggers => this.setAckButtonStatus(triggers, showAckButton))
-      .then(triggers => this.filterTriggersPre(triggers, ds))
-      .then(triggers => this.addTriggerDataSource(triggers, ds))
+      .then(triggers => this.filterTriggersPre(triggers, target))
+      .then(triggers => this.addTriggerDataSource(triggers, target))
       .then(triggers => this.addTriggerHostProxy(triggers, proxies));
     });
 
@@ -339,16 +351,17 @@ export class TriggerPanelCtrl extends PanelCtrl {
     return triggers;
   }
 
-  filterTriggersPre(triggerList, ds) {
+  filterTriggersPre(triggerList, target) {
     // Filter triggers by description
-    let triggerFilter = this.panel.targets[ds].trigger.filter;
+    const ds = target.datasource;
+    let triggerFilter = target.trigger.filter;
     triggerFilter = this.datasources[ds].replaceTemplateVars(triggerFilter);
     if (triggerFilter) {
       triggerList = filterTriggers(triggerList, triggerFilter);
     }
 
     // Filter by tags
-    const target = this.panel.targets[ds];
+    // const target = this.panel.targets[ds];
     if (target.tags.filter) {
       let tagsFilter = this.datasources[ds].replaceTemplateVars(target.tags.filter);
       // replaceTemplateVars() builds regex-like string, so we should trim it.
@@ -406,9 +419,9 @@ export class TriggerPanelCtrl extends PanelCtrl {
     return triggers;
   }
 
-  addTriggerDataSource(triggers, ds) {
+  addTriggerDataSource(triggers, target) {
     _.each(triggers, (trigger) => {
-      trigger.datasource = ds;
+      trigger.datasource = target.datasource;
     });
     return triggers;
   }
@@ -479,24 +492,24 @@ export class TriggerPanelCtrl extends PanelCtrl {
     return _.map(tags, (tag) => `${tag.tag}:${tag.value}`).join(', ');
   }
 
-  addTagFilter(tag, ds) {
-    let tagFilter = this.panel.targets[ds].tags.filter;
+  addTagFilter(tag, target) {
+    let tagFilter = target.tags.filter;
     let targetTags = this.parseTags(tagFilter);
     let newTag = {tag: tag.tag, value: tag.value};
     targetTags.push(newTag);
     targetTags = _.uniqWith(targetTags, _.isEqual);
     let newFilter = this.tagsToString(targetTags);
-    this.panel.targets[ds].tags.filter = newFilter;
+    target.tags.filter = newFilter;
     this.refresh();
   }
 
-  removeTagFilter(tag, ds) {
-    let tagFilter = this.panel.targets[ds].tags.filter;
+  removeTagFilter(tag, target) {
+    let tagFilter = target.tags.filter;
     let targetTags = this.parseTags(tagFilter);
     _.remove(targetTags, t => t.tag === tag.tag && t.value === tag.value);
     targetTags = _.uniqWith(targetTags, _.isEqual);
     let newFilter = this.tagsToString(targetTags);
-    this.panel.targets[ds].tags.filter = newFilter;
+    target.tags.filter = newFilter;
     this.refresh();
   }
 
diff --git a/src/panel-triggers/triggers_tab.js b/src/panel-triggers/triggers_tab.js
index db230a0..9b3032b 100644
--- a/src/panel-triggers/triggers_tab.js
+++ b/src/panel-triggers/triggers_tab.js
@@ -10,7 +10,7 @@ class TriggersTabCtrl {
     this.panelCtrl = $scope.ctrl;
     this.panel = this.panelCtrl.panel;
     this.templateSrv = templateSrv;
-    this.datasources = this.panelCtrl.datasources;
+    this.datasources = {};
 
     // Load scope defaults
     var scopeDefaults = {
@@ -21,6 +21,7 @@ class TriggersTabCtrl {
       oldTarget: _.cloneDeep(this.panel.targets)
     };
     _.defaultsDeep(this, scopeDefaults);
+    this.selectedDatasources = this.getSelectedDatasources();
 
     this.initDatasources();
     this.panelCtrl.refresh();
@@ -30,6 +31,7 @@ class TriggersTabCtrl {
     return this.panelCtrl.initDatasources()
     .then((datasources) => {
       _.each(datasources, (datasource) => {
+        this.datasources[datasource.name] = datasource;
         this.bindSuggestionFunctions(datasource);
       });
     });
@@ -44,6 +46,10 @@ class TriggersTabCtrl {
     this.getProxyNames[ds] = _.bind(this.suggestProxies, this, datasource);
   }
 
+  getSelectedDatasources() {
+    return _.compact(this.panel.targets.map(target => target.datasource));
+  }
+
   suggestGroups(datasource, query, callback) {
     return datasource.zabbix.getAllGroups()
     .then(groups => {
@@ -53,7 +59,8 @@ class TriggersTabCtrl {
   }
 
   suggestHosts(datasource, query, callback) {
-    let groupFilter = datasource.replaceTemplateVars(this.panel.targets[datasource.name].group.filter);
+    const target = this.panel.targets.find(t => t.datasource === datasource.name);
+    let groupFilter = datasource.replaceTemplateVars(target.group.filter);
     return datasource.zabbix.getAllHosts(groupFilter)
     .then(hosts => {
       return _.map(hosts, 'name');
@@ -62,8 +69,9 @@ class TriggersTabCtrl {
   }
 
   suggestApps(datasource, query, callback) {
-    let groupFilter = datasource.replaceTemplateVars(this.panel.targets[datasource.name].group.filter);
-    let hostFilter = datasource.replaceTemplateVars(this.panel.targets[datasource.name].host.filter);
+    const target = this.panel.targets.find(t => t.datasource === datasource.name);
+    let groupFilter = datasource.replaceTemplateVars(target.group.filter);
+    let hostFilter = datasource.replaceTemplateVars(target.host.filter);
     return datasource.zabbix.getAllApps(groupFilter, hostFilter)
     .then(apps => {
       return _.map(apps, 'name');
@@ -78,16 +86,17 @@ class TriggersTabCtrl {
   }
 
   datasourcesChanged() {
-    _.each(this.panel.datasources, (ds) => {
-      if (!this.panel.targets[ds]) {
-        this.panel.targets[ds] = getDefaultTarget();
-      }
-    });
-    // Remove unchecked targets
-    _.each(this.panel.targets, (target, ds) => {
-      if (!_.includes(this.panel.datasources, ds)) {
-        delete this.panel.targets[ds];
+    const newTargets = [];
+    _.each(this.selectedDatasources, (ds) => {
+      const dsTarget = this.panel.targets.find((target => target.datasource === ds));
+      if (dsTarget) {
+        newTargets.push(dsTarget);
+      } else {
+        const newTarget = getDefaultTarget(this.panel.targets);
+        newTarget.datasource = ds;
+        newTargets.push(newTarget);
       }
+      this.panel.targets = newTargets;
     });
     this.parseTarget();
   }
diff --git a/src/panel-triggers/types.ts b/src/panel-triggers/types.ts
index 477d8fb..ffa9e65 100644
--- a/src/panel-triggers/types.ts
+++ b/src/panel-triggers/types.ts
@@ -1,7 +1,7 @@
 export interface ProblemsPanelOptions {
   schemaVersion: number;
   datasources: any[];
-  targets: Map<string, ProblemsPanelTarget>;
+  targets: ProblemsPanelTarget[];
   // Fields
   hostField?: boolean;
   hostTechNameField?: boolean;
@@ -62,6 +62,7 @@ export interface ProblemsPanelTarget {
   proxy: {
     filter: string
   };
+  datasource: string;
 }
 
 export interface TriggerSeverity {
diff --git a/src/panel-triggers/utils.ts b/src/panel-triggers/utils.ts
index d88661f..d9e2124 100644
--- a/src/panel-triggers/utils.ts
+++ b/src/panel-triggers/utils.ts
@@ -1,4 +1,6 @@
+import _ from 'lodash';
 import moment from 'moment';
+import { DataQuery } from '@grafana/ui/';
 import * as utils from '../datasource-zabbix/utils';
 import { ZBXTrigger } from './types';
 
@@ -20,3 +22,13 @@ export function formatLastChange(lastchangeUnix: number, customFormat?: string)
   const lastchange = timestamp.format(format);
   return lastchange;
 }
+
+export const getNextRefIdChar = (queries: DataQuery[]): string => {
+  const letters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
+
+  return _.find(letters, refId => {
+    return _.every(queries, other => {
+      return other.refId !== refId;
+    });
+  });
+};
diff --git a/tslint.json b/tslint.json
index 4c7ea71..ab2614b 100644
--- a/tslint.json
+++ b/tslint.json
@@ -64,7 +64,6 @@
     ],
     "variable-name": [
       true,
-      "check-format",
       "ban-keywords",
       "allow-leading-underscore",
       "allow-trailing-underscore",