External Swf not shown?

1

Hi,
I m loading an swf file in my fla placed in “sprites/boy_front_wc.swf” but i didn’t see anything on the stage,

here is my document class,


package
{
    import flash.display.*;
    import flash.events.*;
    import flash.net.*;
    
    public class LoadSprite extends MovieClip
    {
        
        var urlReq:URLRequest;
        var loader:Loader;
        var mc:MovieClip = new MovieClip();
        
        
        public function LoadSprite()
        {
            
            loader = new Loader();
            urlReq = new URLRequest("sprites/boy_front_wc.swf");
            loader.load(urlReq);
            loader.addEventListener(Event.COMPLETE, loading);
            
            
        }
        
        
        public function loading():void
        {
            
            mc.addChild(loader);
            mc.x = 320;
            mc.y = 240;
            this.addChild(mc);
        }
        
        
    }
    
    
    
}

anyone help me plz…