URGENT! Not sure if I missed it or messed it--Flash text and XML

Okay I am loading different mc's out of the library and in those mc's are multiple dynamic textfields.  I figured that my AS should look something like this but it does not seem to work:

//load my XML
my_xml = new XML();
my_xml.ignoreWhite = true;
my_xml.load("Dtext.xml");
my_xml.onLoad = function(success) {
      if (success) {
            main2D.text = my_xml.firstChild.childNodes.childNodes[0].attributes.main2D;
            upgrade2D.text = my_xml.firstChild.childNodes[0].attributes.upgrade2D;
            full2D.text = my_xml.firstChild.childNodes[0].attributes.full2D;
            mus2D.text = my_xml.firstChild.childNodes[0].attributes.mus2D;
            feature2D.text = my_xml.firstChild.childNodes[0].attributes.feature2D;
      } else {
            trace("XML NOT LOADED!");
      }
};