[ebxml-msg] XPath Transform question...

Messaging Gurus:

I've been having a problem applying this XPath transform, from the spec 
because it returns a BOOLEAN instead of a node list.  I'm using the 
latest XSS4J, and this is the only piece that will not work.

Is the following transform correct?

not(ancestor-or-self::()[@SOAP:actor="urn:oasis:names:tc:ebxml-
msg:actor:nextMSH"] | ancestor-or-
self::()[@SOAP:actor="http://schemas.xmlsoap.org/soap/actor/next"])

There doesn't seem to be anything there to select nodes, as I've seen in 
other transforms people are doing with XSS4J

TIA for any help you can provide.

Matthew MacKenzie
XML Global R&D
PGP Key available upon request.