Repace regex with a variable

Hi,
  Is there a way to substitute a regular expression with a variable text (XSLT 2.0)?

The template looks like this:
<xsl:template match="text()">
   <xsl:variable name="node_name" select="parent::node()/@name"/>
   <xsl:value-of select="replace(., '\$name', $node_name)"/>
</xsl:template>

Problem is that I can't use $node_name in the replace function.
So how do I do this? I would appreciate any pointers.
Thanks,
Anupam.




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