Scenario: Product listing with associated Tags. Each product also hace a product category associated which is stored as a tag. I have managed to get output of all the tags in a tag cloud but are unable to get a list of the categorys (tag groupnames) for some reason. Any ideas please...

<xsl:variable name="currentStore" select="umbraco.library:GetXmlNodeById(Foodstuffs.library:GetCurrentRegionId())"/>
        <xsl:variable name="productsAll" select="$currentStore/ancestor-or-self::*[count(./Promotions/ProductPromotion)&gt;0]/Promotions/ProductPromotion [umbraco.library:DateGreaterThanOrEqual(validEndDate, $currentDate) and umbraco.library:DateGreaterThanOrEqual($currentDate, validStartDate)]"/>

        <xsl:variable name="products" select="$currentStore/ancestor-or-self::*[count(./Promotions/ProductPromotion)&gt;0]/Promotions/ProductPromotion [umbraco.library:DateGreaterThanOrEqual(validEndDate, $currentDate) and umbraco.library:DateGreaterThanOrEqual($currentDate, validStartDate) and contains(Exslt.ExsltStrings:lowercase(./tags), Exslt.ExsltStrings:lowercase($filter))]"/>
        <xsl:variable name="productscat" select="$currentStore/ancestor-or-self::*[count(./Promotions/ProductPromotion)&gt;0]/Promotions/ProductPromotion [umbraco.library:DateGreaterThanOrEqual(validEndDate, $currentDate) and umbraco.library:DateGreaterThanOrEqual($currentDate, validStartDate) and contains(Exslt.ExsltStrings:lowercase(./category), Exslt.ExsltStrings:lowercase($filter))]"/>
<!-- START TAG CLOUD -->
        <xsl:variable name="numberOfRecords" select="count($products)"/>
       
        <xsl:value-of select="$numberOfRecords"/>
        <br/>
       
        <p>TAGS</p>
        <xsl:if test="number($numberOfRecords) &gt;0">
          <xsl:variable name="commaListofTags">
            <xsl:for-each select="$productsAll/tags">
              <xsl:value-of select="concat(.,',')"/>
            </xsl:for-each>
          </xsl:variable>
          <xsl:value-of select="$commaListofTags"/>
         
          <p>TAG</p>
          <article class="clear martop20">
            <div class="curved10 brd4px tagCloudGeneric rel">
              <a class="curved5 sortButton" href="/promotions-competitions/?numberPerPage={$numberPerPage}">Show All</a>
              <p>
                <xsl:for-each select="tagsLib:getAllTags()/tags/tag[@group = 'ProductPromotion']">

                  <xsl:if test="contains(Exslt.ExsltStrings:lowercase($commaListofTags),Exslt.ExsltStrings:lowercase(.))">

                    <a>
                      <xsl:attribute name="href">
                        <xsl:value-of select="concat(umbraco.library:NiceUrl($currentPage/@id),'?numberPerPage=',$numberPerPage,'&amp;filter=',.)"/>
                      </xsl:attribute>
                      <xsl:attribute name="class">
                        <xsl:choose>
                          <xsl:when test="@nodesTagged &gt; 5">
                            <xsl:value-of select="string('tagweight5')"  />
                          </xsl:when>
                          <xsl:otherwise>
                            <xsl:value-of select="concat('tagweight',@nodesTagged)"/>
                          </xsl:otherwise>
                        </xsl:choose>
                      </xsl:attribute>
                      <xsl:value-of select="."/>
                    </a>
                    <xsl:text> </xsl:text>

                  </xsl:if>
                </xsl:for-each>
              </p>

              <div class="clear">
                <xsl:value-of select="''"/>
              </div>
            </div>
          </article>
          <!-- END TAG list -->

<!-- START CATEGORY LIST -->
          <P>CATEGORY</P>
          <xsl:variable name="numberOfRecordscat" select="count($productscat)"/>
          <xsl:value-of select="$numberOfRecordscat"/>
          <br/>
          <p>CATEGORY</p>
          <xsl:variable name="commaListofcat">
            <xsl:for-each select="$productsAll/category">
              <xsl:value-of select="concat(.,',')"/>
            </xsl:for-each>
          </xsl:variable>
          <xsl:value-of select="$commaListofcat"/>
         
          <p>CATEGORY LINKS</p>
          <article class="clear martop20">
            <div class="curved10 brd4px tagCloudGeneric rel">
              <a class="curved5 sortButton" href="/promotions-competitions/?numberPerPage={$numberPerPage}">Show All</a>
              <p>
                <xsl:for-each select="tagsLib:getAllTagsInGroup('commaListofcat')/tags/tag[@group = 'ProductPromotion']">

                  <xsl:if test="contains(Exslt.ExsltStrings:lowercase($commaListofcat),Exslt.ExsltStrings:lowercase(.))">

                    <a>
                      <xsl:attribute name="href">
                        <xsl:value-of select="concat(umbraco.library:NiceUrl($currentPage/@id),'?numberPerPage=',$numberPerPage,'&amp;filter=',.)"/>
                      </xsl:attribute>
                      <xsl:attribute name="class">
                        <xsl:choose>
                          <xsl:when test="@nodesTagged &gt; 5">
                            <xsl:value-of select="string('tagweight5')"  />
                          </xsl:when>
                          <xsl:otherwise>
                            <xsl:value-of select="concat('tagweight',@nodesTagged)"/>
                          </xsl:otherwise>
                        </xsl:choose>
                      </xsl:attribute>
                      <xsl:value-of select="."/>
                    </a>
                    <xsl:text> </xsl:text>

                  </xsl:if>
                </xsl:for-each>
              </p>

              <div class="clear">
                <xsl:value-of select="''"/>
              </div>
            </div>
          </article>
          <!-- END CATEGORY tag list -->