ActionScript 3.0 :: Adding MovieClip Multiple Times Vertically Down

I've run into a bit of a snag regarding a project I'm working on. The code below sets up the mc holder which includes two dynamic text fields sFloor and sCompany these get their contents from an xml file. YAU is one of the additional mc's that I need added at runtime depending on the number shown in the sFloor field.

Code:
var nameHolder:holder;
var nameHolderX:Number = 145;
var nameHolderY:Number = 267;
var YAU:upArrow = new upArrow();

This is the code that add's the holder mc 25 times vertically down and populates the sFloor and sCompany text fields with what's in the XML file

Code:
function loadText():void {
var txtLoader:URLLoader = new URLLoader();
txtLoader.addEventListener(Event.COMPLETE, onLoaded);
txtLoader.load(new URLRequest("XMLfile.xml"));
removeEventListener(Event.COMPLETE, onLoaded);
[Code] .....

it all works fine except that the "YAU" added mc is only added into the last instance on the list (which is the correct number) but I need it to add to any of them that meet the condition.