Gfx Invoke ActionScript not working with AS3 ?

[yczwk]

I write a function in main.as

		public function showMusicPad()
		{
			musicPad.gotoAndPlay(2);
		}

and set a Gfx Invoke ActionScript in kismet.The methodName is showMusicPad.I think I did all right.But it wont work.
Who can tell me how to use Gfx Invoke ActionScript in as3?