diff --git a/catalog-ui/src/app/ng2/pages/composition/graph/composition-graph.component.ts b/catalog-ui/src/app/ng2/pages/composition/graph/composition-graph.component.ts
index c48231f..3cab4b3 100644
--- a/catalog-ui/src/app/ng2/pages/composition/graph/composition-graph.component.ts
+++ b/catalog-ui/src/app/ng2/pages/composition/graph/composition-graph.component.ts
@@ -24,7 +24,8 @@
     ZoneInstance,
     ZoneInstanceAssignmentType,
     ZoneInstanceMode,
-    ZoneInstanceType
+    ZoneInstanceType,
+    Requirement
 } from 'app/models';
 import { ForwardingPath } from 'app/models/forwarding-path';
 import { CompositionCiServicePathLink } from 'app/models/graph/graph-links/composition-graph-links/composition-ci-service-path-link';
@@ -643,6 +644,11 @@
             selectedNode.data('displayName', selectedNode.data().getDisplayName()); // abbreviated
         });
 
+        this.eventListenerService.registerObserverCallback(GRAPH_EVENTS.ON_COMPONENT_INSTANCE_REQUIREMENT_EXTERNAL_CHANGED, (uniqueId:string, requirement:Requirement) => {
+            this._cy.getElementById(uniqueId).data().componentInstance.requirements[requirement.capability]
+                .find(r => r.uniqueId === requirement.uniqueId).external = requirement.external;
+        });
+
         this.eventListenerService.registerObserverCallback(GRAPH_EVENTS.ON_DELETE_COMPONENT_INSTANCE, (componentInstanceId: string) => {
             const nodeToDelete = this._cy.getElementById(componentInstanceId);
             this.nodesGraphUtils.deleteNode(this._cy, this.topologyTemplate, nodeToDelete);
diff --git a/catalog-ui/src/app/ng2/pages/composition/panel/panel-tabs/req-capabilities-tab/requirement-list/requirement-list.component.ts b/catalog-ui/src/app/ng2/pages/composition/panel/panel-tabs/req-capabilities-tab/requirement-list/requirement-list.component.ts
index 3716ef0..6a082ef 100644
--- a/catalog-ui/src/app/ng2/pages/composition/panel/panel-tabs/req-capabilities-tab/requirement-list/requirement-list.component.ts
+++ b/catalog-ui/src/app/ng2/pages/composition/panel/panel-tabs/req-capabilities-tab/requirement-list/requirement-list.component.ts
@@ -4,6 +4,10 @@
 import { ResourceNamePipe } from "app/ng2/pipes/resource-name.pipe";
 import { ComponentInstanceServiceNg2 } from "app/ng2/services/component-instance-services/component-instance.service";
 import { WorkspaceService } from "app/ng2/pages/workspace/workspace.service";
+import { Store } from "@ngxs/store";
+import {TogglePanelLoadingAction} from "../../../../common/store/graph.actions";
+import { EventListenerService } from "app/services";
+import { GRAPH_EVENTS } from "app/utils";
 
 @Component({
     selector: 'requirement-list',
@@ -18,7 +22,9 @@
     
     constructor(private compositionService: CompositionService,
                 private workspaceService: WorkspaceService,
-                private componentInstanceServiceNg2: ComponentInstanceServiceNg2) {}
+                private componentInstanceServiceNg2: ComponentInstanceServiceNg2,
+                private store:Store,
+                private eventListenerService:EventListenerService) {}
 
     public getRelation = (requirement:any):any => {
         if (this.isInstanceSelected && this.component.componentInstancesRelations) {
@@ -41,14 +47,16 @@
     };
 
     onMarkAsExternal(requirement:Requirement) {
-       if (requirement.external){
-	        requirement.external = false;
-       } else {
-	        requirement.external = true;
-       }
-       this.componentInstanceServiceNg2.updateInstanceRequirement(this.workspaceService.metadata.getTypeUrl(), this.workspaceService.metadata.uniqueId, this.component.uniqueId, requirement).subscribe((response:any) => {
-        }, (error) => { console.log("An error has occured setting external: ", error);  });;
-
+       this.store.dispatch(new TogglePanelLoadingAction({isLoading: true}));
+       requirement.external = !requirement.external;
+       this.componentInstanceServiceNg2.updateInstanceRequirement(this.workspaceService.metadata.getTypeUrl(), this.workspaceService.metadata.uniqueId, this.component.uniqueId, requirement)
+           .subscribe(() => {
+               this.eventListenerService.notifyObservers(GRAPH_EVENTS.ON_COMPONENT_INSTANCE_REQUIREMENT_EXTERNAL_CHANGED, this.component.uniqueId, requirement);
+               this.store.dispatch(new TogglePanelLoadingAction({isLoading: false}));
+           } , (error) => { console.log("An error has occured setting external: ", error);
+               requirement.external = !requirement.external;
+               this.store.dispatch(new TogglePanelLoadingAction({isLoading: false}));
+           });
     }
 
 };
diff --git a/catalog-ui/src/app/utils/constants.ts b/catalog-ui/src/app/utils/constants.ts
index 230cb54..0df1a65 100644
--- a/catalog-ui/src/app/utils/constants.ts
+++ b/catalog-ui/src/app/utils/constants.ts
@@ -348,6 +348,7 @@
   static ON_PALETTE_COMPONENT_SHOW_POPUP_PANEL = 'onPaletteComponentShowPopupPanel';
   static ON_PALETTE_COMPONENT_HIDE_POPUP_PANEL = 'onPaletteComponentHidePopupPanel';
   static ON_COMPONENT_INSTANCE_NAME_CHANGED = 'onComponentInstanceNameChanged';
+  static ON_COMPONENT_INSTANCE_REQUIREMENT_EXTERNAL_CHANGED = 'onComponentInstanceRequirementExternalChanged'
   static ON_ZONE_INSTANCE_NAME_CHANGED = 'onZoneInstanceNameChanged';
   static ON_DELETE_COMPONENT_INSTANCE = 'onDeleteComponentInstance';
   static ON_DELETE_ZONE_INSTANCE = 'onDeleteZoneInstance';