Mixing XSLT and XSLFO

[goofy78270]

I am looking to rotate my text 90 degrees within the cell, but the following code displays text at a normal rotation of 0. Any ideas what is wrong?

<?xml version='1.0' encoding='utf-8'?>
<xsl:stylesheet version="1.0" 
  xmlns:xsl="[URL unfurl="true"]http://www.w3.org/1999/XSL/Transform"[/URL]
  xmlns:fo="[URL unfurl="true"]http://www.w3.org/1999/XSL/Format">[/URL]

<!-- Define template for xsl -->
	<xsl:template match="/">

<!-- Define variable for empty string -->
    <xsl:variable name="empty_string"/>
			  
<!-- Define layout for matrix headings -->
    <tr class="Heading1">
		  <xsl:for-each select="MasterKey/Attribute">
        <xsl:choose>
          <xsl:when test="Column = 1">
            <td rowspan="2">
              <xsl:value-of select="Name" />
            </td>
          </xsl:when>
          <xsl:otherwise>
            <xsl:choose>
              <xsl:when test="Position = 1">
                <td colspan="{Column}" align="center">
    		          <xsl:value-of select="Name" />
    		        </td>
              </xsl:when>
            </xsl:choose> 
          </xsl:otherwise>
        </xsl:choose> 
		  </xsl:for-each>
		</tr>
	  <tr class="Heading2">
		  <xsl:for-each select="MasterKey/Attribute">
        <xsl:choose>
          <xsl:when test="Option != $empty_string">
            <td rowspan="2">
              <fo:layout-master-set>
                <fo:simple-page-master master-name="frame">
                  <fo:region-body region-name="frame-body"/>
                </fo:simple-page-master>
              </fo:layout-master-set>
              <fo:page-sequence master-reference="frame">
                <fo:flow flow-name="frame-body">
                  <fo:block-container reference-orientation="90">
                    <fo:block>
  	                  <xsl:value-of select="Option" />
                    </fo:block>
                  </fo:block-container>
                </fo:flow>
              </fo:page-sequence>
  	        </td>            
          </xsl:when>
        </xsl:choose> 
		  </xsl:for-each>
		</tr>
	</xsl:template>
</xsl:stylesheet>