Cannot run VBscript functions under XSLT

I need to add a snippet of VBscript to an XSLT and can't seem to get any functions to work. Just about anything I do returns the error 'Wrong number of arguments or improper property assignment. This is intended to run from a VB6 app and is pre .Net.

Breaking it down, the following exhibits the problem. Any attempt to concatenate (or perform any other function fails).
_/_/_/ MY XSLT... _/_/_/

<?xml version="1.0" encoding="utf-8"?>
  exclude-result-prefixes="msxsl testingVB">
  <msxsl:script implements-prefix='testingVB' language='VBscript'>
Function MyTest(MyStr) 
   Set MyTest = MyStr & " jumps over the lazy dog"
End Function

  <xsl:output method="xml" indent="yes" encoding="utf-8" omit-xml-declaration="no"/>
	<xsl:template match="/">
				<Item><xsl:value-of select="testingVB:MyTest(Items/Item)"/></Item>

_/_/_/ MY XML... _/_/_/

<?xml version="1.0"?>
      <Item>The quick brown fox</Item>

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Trevor HelpsTechnical DirectorAsked:
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MyStr is not a string, it's a nodeset (a collection).
Each item is an XMLElement, so you need to use its .text property to access to the data:
Function MyTest(MyStr) 
   MyTest = MyStr.item(0).text & " jumps over the lazy dog"
End Function

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Gertone (Geert Bormans)Information ArchitectCommented:
you need to cast the node to a string prior to passing it to the function
(note I added the string() function in the XSLT)

<Item><xsl:value-of select="testingVB:MyTest(string(Items/Item))"/></Item>

That is a classic mistake:
Items/Item is a nodeset, not a string

you should also remove the "Set", it doesn't serve anything and the microsoft scripting engine choques on it

      Function MyTest(MyStr)
            MyTest = MyStr + " jumps over the lazy dog"
      End Function

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