Copying nodes

Hi:

I have the following templates for copying nodes and
it's attributes which work OK:

<xsl:template match="/">
  <xsl:apply-templates select="/root/categ"/>
</xsl:template>

<xsl:template match="categ|@*">
  <xsl:copy>
    <xsl:apply-templates select="@*"/> 
    <xsl:copy-of select="*"/>
  </xsl:copy>		
</xsl:template>

What I'm trying to do is to change the value for a
specific attribute, for that purpose I have created
another template but it doesn't seem to execute at
all:

<xsl:template match="@URL">
   http://www.mydomain.com
<!-- or 
    <xsl:copy-of select="http://www.mydomain.com"/>
-->  
</xsl:template>
 
Thanks.

__________________________________________________
Do you Yahoo!?
Yahoo! Mail Plus - Powerful. Affordable. Sign up now.
http://mailplus.yahoo.com

 XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list