Making wind blow - Flashh and XML

I am trying to get the values out of an xml file to manipulate the rotation of a movie clip.
The idea is that an xml file will provide wind direction data and a movie clip of an arrow will be rotated to match the xml file data.
Here is the actionscript code at the moment and the xml code
any help would be much appreciated - for my sanity as much as any thing
Hope this makes sense

import mx.utils.Delegate;

var Wind:Array = new Array();

function gotXML(ev:Object):Void {
var mXML:XML =;
var nodes = mXML.firstChild.childNodes.length;
for (var i=0;i<nodes;i++) {
var node = mXML.firstChild.childNodes*;
Wind.push({ winddirection:node.childNodes[0].firstChild.nodeValue
for (i=0;i<Wind.length;i++) {
var clipName:String = “circle” + i + “_mc”;
this[clipName]._rotation ="???",_x = 150,_y = 150; //value to go in here???//

<?xml version=“1.0” encoding=“ISO-8859-1”?>