height not right

[jAQUAN]

Create two .fla's called SizeParent.fla and SizeChild.fla.
In SizeChild draw a box of anysize and set it's y to anywhere but 0.

Publish SizeChild.swf and place this code on frame 1 in SizeParent

import flash.display.*;
import flash.events.*;
import flash.net.URLRequest;
var l:Loader = new Loader();
l.contentLoaderInfo.addEventListener(Event.COMPLETE, onComplete);
l.load(new URLRequest("SizeChild.swf"));

function onComplete(e:Event):void{
	addChild(l);
	trace(l.content.height);
}

Shouldn't height be the value of your box's y plus its height? I keep getting just the height of the box.

What gives?