scrollpane problem

Jeg har:

/**
    Requires:
      - ScrollPane in library
    */
   
    _root.createEmptyMovieClip("paneContainer", 1);
   
    for(var u=0; u<10; u++){
   
        var smallHolder = _root.paneContainer.createEmptyMovieClip("smallClip"+u, u+200);
        trace("smallHolder = "+smallHolder);
        smallHolder._y = 200*u
       
        loadMovie("http://www.helpexamples.com/flash/images/image1.jpg", smallHolder);
       
    }
   
    for(var t in paneContainer){
       
        trace("t = "+t);
       
    }
   
   
    this.createClassObject(mx.containers.ScrollPane, "my_sp", 10);
    my_sp.setSize(100, 386);
    my_sp._x = 647
    my_sp._y=23
   
    // Create listener object for scroll vertical position.
    var scrollListener:Object = new Object();
    scrollListener.scroll = function(evt_obj:Object) {
    trace("hPosition: " + my_sp.hPosition + ", vPosition = " + my_sp.vPosition);
    };
    // Add listener.
    my_sp.addEventListener("scroll", scrollListener);
   
    // Create listener object for completed loading.
    var completeListener:Object = new Object();
    completeListener.complete = function(evt_obj:Object) {
    trace(evt_obj.target.contentPath + " has completed loading.");
    };
    // Add listener.
    my_sp.addEventListener("complete", completeListener);
   
   
    // attach movieclip to my_sp

    HVORDAN FÅR JEG paneContainer ind i scrollpanen??
   
    my_sp.refreshPane();