How to call a function on a loaded SWF's timeline

Hi , i’m used to work with AS2 where i would simply load a movieclip, and call a function like:


var myMc = createMovieClip("container",getNextHighestDepth())
var mcl:MovieClipLoader = new MovieClipLoader()
var myListener.onLoadInit = function(){
 myMc.helloWorld()
};
mcl.addListener(myListener)
mcl.load("anotherSWF.swf",myMc)

Here in AS3 i’m lost !!! - how do you do this?.. or is this not “The Way™” to do it anymore??.. i need help =[
Edit: Obviously i’m using as3 loader, or greensocks loadermax, and use the evt.target.content… but i cannot do evt.target.content.helloWorld()