Xml as variable

1

I have loaded a XML file on a MC inside my scene and want to use its information (nodes) within different buttons

I loaded it as follow:

 
function loadXML(loaded) { 
if (loaded) { 
_root.Name = this.firstChild.childNodes[0].childNodes[0].firstChild.nodeValue; 
_root.LName= this.firstChild.childNodes[0].childNodes[1].firstChild.nodeValue;
_root.Number= this.firstChild.childNodes[0].childNodes[2].firstChild.nodeValue; 
name_txt1.text = _root.Name; 
comment_txt1.text = _root.LName; 
n=_root.Number
}
else { 
trace("file not loaded!"); 
} 
} 
xmlData = new XML(); 
xmlData.ignoreWhite = true; 
xmlData.onLoad = loadXML; 
xmlData.load("list.xml");

Can I convert the nodes to variables and can I use them along the hole scene?