diff --git a/src/main/java/org/gcube/portlets/user/workspace/client/AppControllerExplorer.java b/src/main/java/org/gcube/portlets/user/workspace/client/AppControllerExplorer.java
index 73f3a28..c07285b 100644
--- a/src/main/java/org/gcube/portlets/user/workspace/client/AppControllerExplorer.java
+++ b/src/main/java/org/gcube/portlets/user/workspace/client/AppControllerExplorer.java
@@ -69,6 +69,7 @@ import org.gcube.portlets.user.workspace.client.event.RenderFormEventHandler;
 import org.gcube.portlets.user.workspace.client.event.SelectedItemEvent;
 import org.gcube.portlets.user.workspace.client.event.SelectedItemEventHandler;
 import org.gcube.portlets.user.workspace.client.event.SendMessageEvent;
+import org.gcube.portlets.user.workspace.client.event.SendMessageEventHandler;
 import org.gcube.portlets.user.workspace.client.event.SessionExpiredEvent;
 import org.gcube.portlets.user.workspace.client.event.SessionExpiredEventHandler;
 import org.gcube.portlets.user.workspace.client.event.SmartFolderSelectedEvent;
@@ -236,6 +237,14 @@ public class AppControllerExplorer implements EventHandler, TreeAppControllerInt
 			}
 		});  
 
+
+		eventBus.addHandler(SendMessageEvent.TYPE, new SendMessageEventHandler() {
+
+			@Override
+			public void onSendMessage(SendMessageEvent sendMessageEvent) {
+				notifySubscriber(sendMessageEvent);
+			}
+		});
 		
 		eventBus.addHandler(UnShareFolderEvent.TYPE,new UnShareFolderEventHandler() {