External swf - accessing textfield properties

Hi all, i desperately need your help

I am trying to load an external swf file which has some dynamic text fields in it. It loads ok, however, I can’t access any of textfields’ properties. Ideally, I would like to be able to load that swf and populate the textfields with some values. Is it actually possible in flash mx 2004 (professional)?

Here is the code:


_root.createEmptyMovieClip("creditBar", 1);
_root.creditBar = new MovieClipLoader();
_root.creditBar.creditBar.onLoadError = function() {
trace("error loading");
}
_root.creditBar.onLoadComplete = function() {
trace("loaded");
_root.creditBar.bank1_txt.text="test message";
trace(_root.creditBar.bank1_txt.text);
}
_root.creditBar.loadClip("creditBarSWP.swf", 1);
 

and here is what output window gives me:
loaded
undefined

Any help would be appreciated. Attached is the source code.