How to count number of xml nodes , with JSTL XML api?

Question

I am trying to count the number of nodes in the parsed xml by doing this:
<x:out select="count($doc/Items/Item)"/>
There are about 50 item nodes in the source xml, but I get the output as 0
Is this syntax correct?
I searched every where but couldn't find the xpath syntax to be used inside jstl xml tags, I was assuming that it's the same as the syntax used in xslt

Answer 1

Thank you for your reply, sorry I wasnt very clear with my question.
I want to count the number of nodes inside the jsp file , not inside the xslt file.
My xml file is something like this for example:
<?xml version="1.0" encoding="UTF-8"?>
<DocumentRootNode>
<Products>
<Item>1</Item>
<Item>2</Item>
<Item>3</Item>
<Products>
</DocumentRootNode>
I want the count of number of Item nodes , in the JSP file.
I'm doing something like this in the JSP but it gives 0 instead of 3:
<c:import url="source.xml" var="xml" charEncoding="UTF-8"/>
<x:parse doc="${xml}" var="xml_doc"/>
<x:out select="count($xml_doc/Products/Item)"/>
null