Seems to work for me. This is the complete code:

************************************************
XML Page
************************************************

<?xml version="1.0" ?>

<DOCUMENT>
	<TAG1>something</TAG1>
	<TAG2>something</TAG2>
	<TAG3>something else</TAG3>
	<TAG4>whatever<TAG5>something else</TAG5>next</TAG4>
</DOCUMENT>

*************************************************
XSL page
*************************************************
<xsl:stylesheet xmlns:xsl="http://www.w3.org/TR/WD-xsl">

<xsl:template match="/">  

<xsl:if test="//DOCUMENT[TAG1 = TAG2]">
   	<xsl:value-of select="//DOCUMENT/TAG1"/> 
</xsl:if>

<BR/>

<xsl:if test="//DOCUMENT[TAG3 = TAG4/TAG5]">
	<xsl:value-of select="//TAG5"/>
</xsl:if>

</xsl:template>  
</xsl:stylesheet>  

***********************************************
Output
***********************************************

something<BR/>something else

***********************************************

You could also use the "for-each" syntax if there were more than one:

<xsl:stylesheet xmlns:xsl="http://www.w3.org/TR/WD-xsl">

<xsl:template match="/">  

<xsl:for-each select="//DOCUMENT[TAG1 = TAG2]">
   	<xsl:value-of select="TAG1"/> 
</xsl:for-each>

<BR/>

<xsl:for-each select="//DOCUMENT[TAG3 = TAG4/TAG5]">
	<xsl:value-of select="TAG3"/>
</xsl:for-each>

</xsl:template>  
</xsl:stylesheet>

(which gives the same output in this case)

What parser are you using?

Rgs,

Ben Robb
cScape

> -----Original Message-----
> From: Peter-Paul Koch [mailto:ppk@xxxxxxxxxx]
> Sent: 13 September 1999 17:13
> To: xsl-list@xxxxxxxxxxxxxxxx
> Subject: RE: Comparing content
> 
> 
> >Try something like:
> ><xsl:if test="DOCUMENT[TAG1 = TAG2]">
> >	<!-- do something -->
> ></xsl:if>
> >
> >or
> >
> ><xsl:if test="DOCUMENT[TAG1 = TAG3/TAG4]">
> >	<!-- do something -->
> ></xsl:if>
> 
> This is exactly what I've tried for days now, it just won't 
> work. As soon
> as you put a string behind the '=' everything works fine, but I want a
> dynamic comparision.
> 
> Cuurently I try in the <xsl:template select="role">:
> 
> <xsl:apply-templates select="/JDF/project/role[@id = ./supervisor]" />
> 
> where the basic XML is
> 
> <role id="pm">
> 	<blah...>
> </role>
> 
> <task>
> 	<supervisor>pm</supervisor>
> 	<blah...>
> </task>
> 
> Nothing happens...
> 
> Provisional version: http://www.netlinq.nl/interest/xml/interest.xml
> 
> ppk
> 
> 
>  XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list
> 


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