Xml error in text Boxes

programming flash
1

I have a website that i’m trying to when i click in a button the language changes, so i used the following xml:

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

<XML>
      <LANGUAGE>
            <Frase>Sobre o Site</Frase>
            <Frase>Conhecer O Porto</Frase>
      <LANGUAGE>
</XML>

Then i have the as3 code :

var bandeira:int;
var XMLData:XML;
var XMLLoader:URLLoader = new URLLoader();
XMLLoader.addEventListener(Event.COMPLETE, XMLLoaded);
XMLLoader.load(new URLRequest("inglesXML.xml"));

function XMLLoaded(e:Event):void{
      XMLData = new XML(e.target.data);
      addChild(menu);
      changeLanguage(1);
}


function changeLanguage(bandeira) :void{
    if(changeLanguage !=null) {
        menu.sobreosite.text = "+XMLData.LANGUAGE.Frase[1]+";

    }
    if(bandeira ==1) {
        menu.sobreosite.text = +XMLData.LANGUAGE.Frase[1];
    }
}

Im getting the error #2032, and it says that it has a flux error. Any ideas how to put the text showing in the text boxes?