Can't access MC child of loader

1

I’m using the code bellow:


function Toload():void{

var mcExt:MovieClip;


var ldr:Loader = new Loader();
ldr.contentLoaderInfo.addEventListener(Event.COMPLETE, swfLoaded);
ldr.contentLoaderInfo.addEventListener(Event.INIT,loading);

ldr.load(new URLRequest(fileName+".swf"));

function swfLoaded(e:Event):void {
	var mcExt:MovieClip = ldr.content as MovieClip;
	ldr.contentLoaderInfo.removeEventListener(Event.COMPLETE, swfLoaded);
	
	container_mc.window_mc.addChild(mcExt);
	
	menu_mc.produtos.addEventListener(MouseEvent.CLICK, clicked);
	
}
function clicked(e:MouseEvent):void {	
		mcExt.gotoAndStop("exit");			
}

The problem I’m getting and I can’t figure it out in AS3, is how to call the “mcExt” from another function, outside the function where the mc is created.
tried MovieClip(root).container_mc.window_mc.mcExt.gotoAndStop(“exit”); and it does not work.

please, any help will be great!!!