node test in patern from string()

Can anyone help me with how to use a string variable as part of a pattern?
The following is illegal but it shows what I want to do.

  <xsl:call-template name="buildEnum">
   <xsl:with-param name="enum" select="string('region')"/>
  </xsl:template>

  <xsl:template name="buildEnum">
  <xsl:param name="enum"/>
  <xsl:variable name="enums"
select="document('../common/enum.xml')/enums/$enum"/>
  </xsl:template>

The XT error occurs on the variable definition at the $enum - "expected node
test".

Jon Smirl
jonsmirl@xxxxxxxxxxxx



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