addChild clip of externally loaded movie's library

Hi,

How do use addChild to add an externally loaded movieClip from an externally loaded movie’s library?

For example:

There are two movies, loadtest.swf and myshapes.swf. Loadtest.swf loads in myshapes.swf.

In the library of myshapes.swf are two movieClips: square and circle. In properties/linkage both have a class named after the name of the clips (ie. square for the square movie clip; circle for the circle movie clip).

I have no problem loading the myshapes.swf into the loadtest clip. I’m just stuck on how to load the clip’s from that externally loaded movie’s library.

//CODE FROM THE loadtest.fla file
var mainmovie:Loader = new Loader();
var externalURL:URLRequest = new URLRequest(“myshapes.swf”);
mainmovie.load(externalURL);
mainmovie.contentLoaderInfo.addEventListener(Event.COMPLETE, loadmyclip);

function loadmyclip(loadEvent:Event){
addChild(loadEvent.currentTarget.content);

}

stop();

[URL=“http://artbu.com/loadtest.zip”]

Thank you for any help on this problem.