parse XML in Indesign
===

I have the following XML file contents:

    <?xml version="1.0" encoding="UTF-8"?>
    <dataroot xmlns:od="urn:schemas-microsoft-com:officedata" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  xsi:noNamespaceSchemaLocation="Vini.xsd" generated="2012-07-24T17:35:00">
    <Vini>
    <ID>1</ID>
    <Provincia>BG</Provincia>
    <Produttore>ANGELO PECIS</Produttore>
    <Nome>VALCALEPIO MOSCATO PASSITO ARGO</Nome>
    </Vini>
    <Vini>
    <ID>2</ID>
    <Provincia>BG</Provincia>
    <Produttore>ANGELO PECIS</Produttore>
    <Nome>VALCALEPIO ROSSO RISERVA ROSSO DELLA PEZIA</Nome>
    </Vini>
    ...
    <dataroot>

when I tried to parse XML

    ...
    var xmlStr = new XML ( fileContents);
    var str = xmlStr.xpath("//Vini");
    len = str.length()

number of Vinis (len) is 0. Why?
