display current frame number [AS3]

[rpgamer2003]

I feel like such an idiot but after trying endlessly I still haven't managed to come up with a way to display the current frame number of nested movie clip ("ecke1") (in a dynamically created text field).
The problem really is that I don't know how to have flash keep updating the variable.

Here's my latest attempt:

var frame:int = 0;
	addEventListener(Event.ENTER_FRAME,updateframe,false,0,true);
	function updateframe(e:Event):void{
		if (frame < ecke1.currentFrame)
			frame += 1;
		} 
	
		var txt2:String = String(frame);
		 var textfeld:TextField = new TextField();
		textfeld.text = txt2;
		addChild(textfeld);