Xpath as variable, then processing it

Hi all,

I have a little question :

I have a small XML Data containing in one of its field an Xpath (as
text) which should be used in an XSL-T for querying data in another XML
using this XPath. The following XSL handles it as a variable.

<Classes>
	<Class>
		<Architecture name="Application" abr="AA">
			<xsl_File name="App_Apt_Apx_Applications"

file="App_Apt_Apx_Applications.xsl"

XPath="/Classes/Class/SADefinition[starts-with(@SAObjName,'app_') or
starts-with(@SAObjName,'apx_') or starts-with(@SAObjName,'apt_')]"/>
(...)

Then, the XSL file looks as follow :

<xsl:stylesheet version="1.1"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
	<xsl:variable name="mainXML_node"
select="document('../XML/PM-EA-AA_IA_PA_TA.xml')"/>     (The main XML)
	<xsl:output method="html" version="1.0" encoding="UTF-16"
indent="yes"/>
	<xsl:template match="/">
		<xsl:result-document
href="../TCL/Temp/TCL_Data_Config.tmp">
			<xsl:value-of disable-output-escaping="yes"
select="'{'"/>
			<xsl:for-each-group
select="/Classes/Class/Architecture" group-by="@name">
				<xsl:sort select="@name"/>
				<xsl:value-of
disable-output-escaping="yes" select="concat('{',@name,' ')"/>
				<xsl:for-each-group select="xsl_File"
group-by="@name">
					<xsl:sort select="@name"/>
					<xsl:variable name="path"
select="@XPath"/>
					<xsl:value-of
disable-output-escaping="yes" select="concat('{',@name,' ')"/>
					<xsl:for-each
select="$mainXML_node">			(Here is the problem)
						<xsl:for-each-group
select="$path" group-by="@SAObjName">
							<xsl:sort
select="@SAObjName"/>
(...)



I hope the upon the text is correctly indented by your mail browser.

Unfortunately, it won't work. Have anyone got an idea on how to solve my
problem?

Best regards

Lawrence