> <xsl:attribute name="path"><xsl:value-of select="id('test')/xx"/></
> xsl:attribute>
> 
> <xsl:attribute name="path"><xsl:value-of select="id('test')/xx/@yyy"/></
> xsl:attribute>

> Am I doing something incorrect?

well the xpath's you state are valid xpath's but whether or not they
should generate any non empty string as a result depends on the input
document...

they should work if yy has an id attribute of type ID attribute and your
input looks like  

<yy id="test">
  <xx yyy="foo">bar</xx>
</yy>

you should get path="bar" and path="foo"  respectively.

David

________________________________________________________________________
This e-mail has been scanned for all viruses by Star Internet. The
service is powered by MessageLabs. For more information on a proactive
anti-virus service working around the clock, around the globe, visit:
http://www.star.net.uk
________________________________________________________________________

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