Shop cart xml = show number of items and values

[LEFT]Hi, I do not have much knowledge with xml, I have two fields, one for items and other values, I want to show the total of each field.

[LEFT]I’m using a model of the gallery’s xml kirupa tutorials.

The XML:


The AS:

function loadXML(loaded) {
    if (loaded) {
        xmlNode = this.firstChild;
        itens = [];
        valor = [];
        total = xmlNode.childNodes.length;
        for (i=0; i<total; i++) {
            itens* = xmlNode.childNodes*.childNodes[0].firstChild.nodeValue;
            valor* = xmlNode.childNodes*.childNodes[1].firstChild.nodeValue;
    } else {
        content = "file not loaded!";
xmlData = new XML();
xmlData.ignoreWhite = true;
xmlData.onLoad = loadXML;

function picture_num() {

    pos_txt.text = current_pos+" / "+total;
    itens_txt.text = itens[0] + itens[0]; 
    valor_txt.text = valor[1] + valor[1];

I want to add the values.
The itens field need to show: 3
The Price field need to show: 78,43

but now they are showing:
The itens field need to show: 11
The Price field need to show: 65,8865,88

Somebody can help me?

Sorry about my English.