XML Parse - document load and parse from local disk

Hi, i need parse easy xml doc. if I upload a file as a string it's all right. But how do I load a file?

<root>
<name>
Giada De Laurentiis
</name>
<price>
30.00
</price>
</root>


My parse code:
// to - do - this i need load and parse data from file
var xmlString = "<root><name>Giada De Laurentiis</name><price>30.00</price></root>";
var xmlDataObj = ParseXML(xmlString);
Log.Message(xmlDataObj.getElementsByTagName('price')[0].childNodes[0].nodeValue);

I try code from https://support.smartbear.com/testcomplete/docs/testing-with/advanced/working-with-external-data-sources/files/xml.html but it does not work for me..

Please help me :(... Thx