I can't seem to get this pattern to work:

I have stripped down my files for testing:

In a nutshell, what I am trying to do is this:

     <xsl:when test="ancestor::form/@name = '1007'">
      <xsl:value-of select="name[ancestor::form/primary='true']"/>
     </xsl:when>

If the form/@name = '1007', I want to go look at the other form tags to find 
the one that has an attribute primary='true' and use that name for my form 
name.  But I am getting a blank entry.  I was just guessing on this 
statement and not sure how to get it to work:

My xslt file:
*****************************************************
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
 <xsl:output method="xml" indent="yes"/>
 <xsl:template match="/*">
  <xsl:copy>
   <xsl:apply-templates select="appraisal/data/form/tag | 
appraisal/data/form/section/tag">
    <xsl:sort select="ancestor::form/@primary" order="descending"/>
    <xsl:sort select="ancestor::section/@number" order="ascending" 
data-type="number"/>
   </xsl:apply-templates>
  </xsl:copy>
 </xsl:template>
 <xsl:template match="tag">
  <form>
   <sectionNumber>
    <xsl:value-of select="ancestor::section/@number"/>
   </sectionNumber>
   <primary>
    <xsl:value-of select="ancestor::form/@primary"/>
   </primary>
   <formName>
    <xsl:choose>
     <xsl:when test="ancestor::form/@name = '1007'">
      <xsl:value-of select="name[ancestor::form/primary='true']"/> 
<---------
     </xsl:when>
     <xsl:otherwise>
      <xsl:value-of select="ancestor::form/@name"/>
     </xsl:otherwise>
    </xsl:choose>
   </formName>
   <tagName>
    <xsl:value-of select="@name"/>
   </tagName>
   <flags>
    <xsl:if test="not(@flags)">
     <xsl:attribute name="xsi:nil">true</xsl:attribute>
    </xsl:if>
    <xsl:value-of select="@flags"/>
   </flags>
   <format>
    <xsl:if test="not(@format)">
     <xsl:attribute name="xsi:nil">true</xsl:attribute>
    </xsl:if>
    <xsl:value-of select="@format"/>
   </format>
   <value>
    <xsl:value-of select="text()"/>
   </value>
  </form>
  <xsl:apply-templates select="addendum[heading | body]"/>
 </xsl:template>
</xsl:stylesheet>
******************************************************

My xml file:
******************************************************
<?xml version="1.0" encoding="utf-8"?>
<Report>
  <appraisal>
    <data>
      <form name="1007" primary="false">
        <section type="subject" number="0">
          <tag name="GR_AGE.1" flags="1" format="4096">4 Yrs.</tag>
        </section>
      </form>
      <form name="reffee" primary="false">
          <tag name="FFHD_NFIP_COMMUNITY_NUMBER.1" flags="0" 
format="0">040040</tag>
      </form>
      <form name="1004_05" primary="true">
        <section type="subject" number="0">
          <tag name="PROP_PHYS_DEFICIENCIES_DESC.1" flags="4" 
format="4096">None apparent </tag>
        </section>
      </form>
    </data>
  </appraisal>
</Report>
********************************************************

My result:
******************************************************
<?xml version="1.0" encoding="utf-8"?>
<Report>
  <form xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <sectionNumber>0</sectionNumber>
    <primary>true</primary>
    <formName>1004_05</formName>
    <tagName>PROP_PHYS_DEFICIENCIES_DESC.1</tagName>
    <flags>4</flags>
    <format>4096</format>
    <value>None apparent </value>
  </form>
  <form xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <sectionNumber></sectionNumber>
    <primary>false</primary>
    <formName>reffee</formName>
    <tagName>FFHD_NFIP_COMMUNITY_NUMBER.1</tagName>
    <flags>0</flags>
    <format>0</format>
    <value>040040</value>
  </form>
  <form xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <sectionNumber>0</sectionNumber>
    <primary>false</primary>
    <formName></formName>                      <-------- Want this to be 
1004_05
    <tagName>GR_AGE.1</tagName>
    <flags>1</flags>
    <format>4096</format>
    <value>4 Yrs.</value>
  </form>
</Report>
*******************************************************

Everything else works fine.

What should that line be?  Do I need to do another match and template?

Thanks,

Tom