Moviecliploader function how to get her arguments? w Proxy.create()

programming flash
1

I dont want it like the classic way
listenerThumbs.onLoadInit = function(target_mc:MovieClip) {

};
But with the Proxy.create class, how do I get the arguments of the moviecliploader? (ex: target_mc, loadedbytes, totalbytes)
Now I did it like this, but it has to be different.


var mclThumbs:MovieClipLoader = new MovieClipLoader();
var listenerThumbs:Object = new Object();
var mcThumb:MovieClip
listenerThumbs.onLoadStart = function(target_mc:MovieClip) {
     mcThumb = target_mc
}
listenerThumbs.onLoadInit = Proxy.create(this, thumbLoaded, mcThumb);
mclThumbs.addListener(listenerThumbs);
mclThumbs.loadClip(url,mvcSrc);