[]MovieClip的target和currentTarget属性为undefined？

		private function showNowPic():void{

			for each(var ul:String in pics){

				var mc:MovieClip = new MovieClip;

				mc.load(ul);

				this.addChild(mc);

				mc.on(Event.COMPLETE,this,stopNowMC)

			}

		}

		private function stopNowMC(e:Event):void{

			trace(e.currentTarget);

			trace(e.target);

			MovieClip(e.currentTarget).gotoAndStop(MovieClip(e.target).count-1);

		}