use variable in <xsl:if test=

How in the world ;-) can i use a variable in <xsl:if  test=..>

<xsl:variable name="condition" select="*[.//author='C. J. Date']"/>

  <xsl:template match="node()[name()=$entity]">
 <xsl:if test="boolean(string($condition))">
   <xsl:copy-of select="*"/>
 </xsl:if>
  </xsl:template>

This does not work neigther with
{$condition}
nor
anything else.

BUT I need to do it this way. I can NOT directly put it in there.

Who can help?

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 ROBERT SÖSEMANN  (robert.soesemann@xxxxxx)

 schwärzlocherstr. 29/1 | 72070 tübingen
 tel : 07071 / 400 880

 icq# : 100 467 870
 pgp-keys : www.webspace-journey.de/pgp.asc
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