InstallScript read XML not working as expected

[raffaeu]

I have a simple XML file that needs to be read from my InstallScript module.
The structure of the XML is the following:

  xmlns="http://company.com"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://company.com SuiteConfiguration_schema.xsd">

  
  
    
      user
      password
    
 

And this is the code I am using to read the XML:

	/*------------------------------------------------------------------
	Load the XML parser
	--------------------------------------------------------------------*/
	try
		set xml = CoCreateObject("Microsoft.XMLDOM");
		xml.async = FALSE;
		xml.setProperty("SelectionLanguage", "XPath");
		xml.setProperty("SelectionNamespaces", "xmlns='http://company.com'");
		MessageBox("XML created", INFORMATION);
		/*------------------------------------------------------------------
		Load the XML document
		--------------------------------------------------------------------*/
		if(xml.Load(OLD_FILE)) then
			MessageBox("Document loaded", INFORMATION);
			/*--------------------------------------------------------------
			Parse the database section
			----------------------------------------------------------------*/
			set node = xml.selectSingleNode(xml, "//Configuration/Database/Credentials/@Authentication");		
			MessageBox(node, INFORMATION);
		else
			MessageBox("Document can't be loaded", SEVERE);
		endif;
	catch
		MessageBox("CoCreateObject Failed- "+ Err.Decription, SEVERE);
	endcatch;

The issue is that the script executes, I get two messageboxes ("XML created" and "Loaded") but the node selected using XPath does not even execute that piece of code because the third messagebox is not even displayed
and no errors are thrown ...

Actually I am getting lost, any idea?

[raffaeu]

I found the error by myself, it was related to the fact the I was not mentioning the namespace within the XMLDOM object.
In my case I am using some namespaces so I had to declare a "fake" prefix in order to be able to execute the XPath query properly.

set xml = CoCreateObject("Microsoft.XMLDOM");
xml.async = FALSE;

// set the XPath and Namespaces properties
xml.setProperty("SelectionLanguage", "XPath");
xml.setProperty("SelectionNamespaces", "xmlns:ns='http://mproof.com'");

// create an XPath query
output = xml.selectNodes("//ns:Database/ns:Credentials")(0).text;