 			mediator.onSubscribe.removeCallback(subscribeMediator);
 			
 			mediator.onRemove.dispatch(mediator, this);
+			
+			return true;
 		}
 
 		

		 * 
		 * @param mediator
		 */
		public function addMediator(mediator:Mediator):void
		{
			if(!registerNotifier(mediator)) return;
			
			const subscriptions:Vector.<NotificationType> = mediator.listSubscriptions();
			const subscriptionsLength:int = subscriptions.length;

		 * 
		 * @param mediator
		 */
		public function removeMediator(mediator:Mediator):Boolean
		{
			if(!unregisterNotifier(mediator)) return false;
			
			const subscriptions:Vector.<NotificationType> = mediator.listSubscriptions();
			const subscriptionsLength:int = subscriptions.length;
