[xsl] Xalan extension function

How to print the attibute value of <xsl:value-of
select="../AccessFeesGroup/@groupType"/> ?????  such as

<xsl:variable name="VariantA">
    <AccessFeesGroupList>
            <xsl:call-template name="createAccessFeesPeriods"/>
    </AccessFeesGroupList>
</xsl:variable>

<xsl:template match="/">  
     <xsl:for-each
select="xalan:nodeset($VariantA)/AccessFeesGroupList/AccessFeesGroup">
        MValue: <xsl:value-of select="../AccessFeesGroup/@groupType"/> :
    </xsl:for-each>    
</xsl:template>


<xsl:template name="createAccessFeesPeriods">
    <xsl:for-each
select="Document/Invoice/InvoiceItem[(_at_)CT='A']/AggSet/Att[(_at_)Ty='TM'][gener
ate-id() = generate-id(key('by-id', @Id)[1])]">    
      <xsl:variable name="SN_Id" select="../Att[(_at_)Ty='SN']/@Id"/>
      <xsl:variable name="groupTypeValue">
          <xsl:choose>
              <xsl:when test="$SN_Id='TEL'">B</xsl:when>
              <xsl:when test="$SN_Id='*ToDo
/Configuration/Groupings/BundleServices *'">BUN</xsl:when>
              <xsl:when test="$SN_Id='*ToDo
/Configuration/Groupings/P1Services  *'">P1</xsl:when>
              <xsl:otherwise>P2</xsl:otherwise>
          </xsl:choose>
      </xsl:variable>
      <xsl:value-of select="$groupTypeValue"/>&sep; <!-- Just To show
the output of groupType -->
      <AccessFeesGroup groupType="$groupTypeValue"> 
          <Period dateFrom='20080202' dateTo='' discountValue=''
invoiceLineValue='' vatValue=''/>
      </AccessFeesGroup>
    </xsl:for-each>
</xsl:template>

Note: The value of $groupTypeValue is 'B'

Expected output:        MValue: B   
Acutal output: No output ????????



Regards,
ElayaRaja 







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