Hi Jeni,
> 
> > You're almost there with:
> >
> Just
> > remove the quotes, and it should work:
> >
> >   /root/order/product[@id=/root/output/data/product_id]
> >
that pretty cool it was the right path. I did it this way now:
 THX Jochen
 
    <xsl:template name="line">
     <br/>
    <xsl:for-each select="data">
             <xsl:variable name="product_id" select="product_id"/>
             <xsl:apply-templates
 select="/root/order/product[@id=$product_id]"/>
    </xsl:for-each>
    </xsl:template>
 
    <xsl:template match="/root/order/product[@id=$product_id]">
      <xsl:for-each select="content/@group">
         <br/><xsl:value-of select="."/>
         </xsl:for-each>
    </xsl:template>

 


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