TileList source points to xml file

Hi, perhaps this is an old question, but I am really not very good with AS3 to modify others or to understand others codes well enough, and need help please.

I have a TileList and a UILoader, the TileList loads pics into UILoader by action script AS3

Action Script 3 coding for Tilelist:

Code:

---

tilelist.addItem({source:"images/pic1.jpg"});
tilelist.addItem({source:"images/pic2.jpg"});
tilelist.addItem({source:"images/pic3.jpg"});
tilelist.addItem({source:"images/pic4.jpg"});
tilelist.addItem({source:"images/pic5.jpg"});
tilelist.addItem({source:"images/pic6.jpg"});
tilelist.addItem({source:"images/pic7.jpg"});
tilelist.addItem({source:"images/pic8.jpg"});
tilelist.addItem({source:"images/pic9.jpg"});

tilelist.columnWidth = 90;
tilelist.rowHeight = 70;
tilelist.columnCount = 5;
tilelist.rowCount = 1;

var imgurl:String = "images/pic1.jpg";
var myrequest:URLRequest = new URLRequest(imgurl);
myloader.scaleContent = true;
myloader.load(myrequest);

tilelist.addEventListener(Event.CHANGE, photoselect);

function photoselect (event:Event):void{
        var imgurl:String = tilelist.selectedItem.source;
        var myrequest:URLRequest = new URLRequest(imgurl);
        myloader.scaleContent = true;
        myloader.load(myrequest);
}

---

but, I want my source links to appear in an external XML to make it easier to update.

How do I change the coding on top to do that?

Thanks
Bat Sheva

sorry, not all source files downloaded