Path issue

Hi,

i have a moviecliploader class in my main movie and i would like to be check to see when it has been activated from a external swf… how do i go about doing this??

var loader_listener:Object = new Object();
loader_listener.onLoadStart = function() {

};
loader_listener.onLoadInit = function(target_mc:MovieClip):Void  {

};
loader_listener.onLoadComplete = function() {
// tell external swf that i have be used 
};
var loader:MovieClipLoader = new MovieClipLoader();
loader.addListener(loader_listener);