Bitmapfilling custom shape

programming flash
1

Hi guys am in a bit of a mess here.:hr:
Here is what am trying to do.

createDuplicate function helps me to create a duplicate movieclip. Now I want to bitmap fill this duplicate mc. Is this possible? Am so confused please help…


        private function createDuplicate(mc:MovieClip):Sprite
        {
            var thisBitmapData:BitmapData = new BitmapData(stage.stageWidth, stage.stageHeight, true, 0x00000000);
            thisBitmapData.draw(mc);
            
            var thisBitmap:Bitmap = new Bitmap(thisBitmapData);
            thisBitmap.smoothing = true;
            
            var newInstance:Sprite = new Sprite();
            newInstance.cacheAsBitmap = true;
            newInstance.addChild(thisBitmap);
            
            return newInstance;
        }

Cheers