[xsl] using position() and last() with join

I am attempting to insert a return (
) after each element but the  
last of a node set generated by a join. I am building a table  in  
which one or more lesson names will be pulled into the right-hand  
cell of each row. The join works fine.
Here is the part of the stylesheet in question:

 <xsl:for-each-group select="current-group()/SS" group-by=".">
<!--left-hand cell text selected from main xml document-->
           <Cell aid:table="cell" aid:crows="1" aid:ccols="1"  
aid:ccolwidth="342.5">
              <xsl:copy-of select="node()"/>
          </Cell>

<!--right-hand cell; nodes from $lessonFile-->
         <Cell aid:table="cell" aid:crows="1" aid:ccols="1"  
aid:ccolwidth="197.">
              <xsl:variable name="skillNumber" select="current-group 
()/../@skill"/>
                  <xsl:for-each select="$lessonFile">

                    <xsl:copy-of select="key('lessonName_by_num',  
$skillNumber)/child::node()" />
<!--the if statement below does nothing here or directly above the  
copy-of line-->
                    <xsl:if test="position() != last()">  
<xsl:text>&#10;</xsl:text> </xsl:if>
         </xsl:for-each>
      </Cell>
             </xsl:for-each-group>



Thanks in advance for any suggestions.


Terry Ofner


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