Hi Ken, 
thank you for the tips and that does solve my problem.

For those interested, here is my updated xsl file: 
" 
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="2.0">
    <xsl:output method="xml" indent="yes"/>

    <xsl:variable name="doc2"
select="document('testcases.xml')"/>
   <xsl:template match="/">
        <TestCases>
           <xsl:apply-templates />
        </TestCases>
   </xsl:template>

   <xsl:template match="Obj">
       <xsl:variable name="objName" select="@name"/>
       <xsl:variable name="caseString" select =
"$doc2//obj[@name = $objName]/@cases"/>
        <xsl:variable name="caseArray" 
select="tokenize($caseString, ',')"/>

        <xsl:variable name="Obj" select="."/>
       <xsl:for-each  select="$caseArray">
           <obj>
               <xsl:variable name="a"
select="position()"/>
                     <xsl:attribute name="name">
                            <xsl:value-of
select="$objName"/>
                     </xsl:attribute>
                     <xsl:attribute name="case">
                           <xsl:value-of
select="$caseArray[$a]"/>
                     </xsl:attribute>

                <xsl:apply-templates
select="$Obj/node()"/>
           </obj>
       </xsl:for-each>
   </xsl:template>

</xsl:stylesheet>
" 


-c 


--- "G. Ken Holman" <gkholman@xxxxxxxxxxxxxxxxxxxx>
wrote:

> At 2008-08-18 13:43 -0700, chun ji wrote:
> >Here is my XSL file that does not work,
> >    <xsl:template match="Obj">
> >        <xsl:variable name="objName"
> select="@name"/>
> >        <xsl:variable name="caseString" select =
> >"$doc2//obj[@name = $objName]/@cases"/>
> >         <xsl:variable name="caseArray"
> >select="tokenize($caseString, ',')"/>
> >
> >        <xsl:for-each  select="$caseArray">
> 
> Here you are iterating over a set of strings
> returned from tokenize().
> 
> >      <xsl:apply-templates />
> 
> And you are not in any node tree, so there is no 
> way to push any nodes at your stylesheet.  Your 
> current context item is a string value.
> 
> >!0XTTE0510: Cannot apply-templates to child nodes
> when
> >the context item is an atomic value!1.
> 
> Which is why you get the error.
> 
> If you wanted to push the node children of Obj 
> then put Obj into a variable and use:
> 
>    <xsl:apply-templates select="$Obj/node()"/>
> 
> I hope this helps.
> 
> . . . . . . . . . . . . . Ken
> 
> --
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