> No, they can not appear together.
> Either it will be 'EFSA', or 'No dissemination' or another value.
> 
> So the 2nd part is not always true!

Okay, let's see.  Here is the expression:

($doc_scope!='EFSA' or $doc_scope!='No dissemination')

If $doc_scope is 'EFSA' the first test is false and the second is true.
The result of (false or true) is: true

If $doc_scope is 'No dissemination', the first test is true and the second is
false.
The result of (true or false) is: true


> 
> -----Original Message-----
> From: Paul DuBois [mailto:paul@xxxxxxxxxxxx] 
> Sent: 26 November 2003 17:27
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject: Re:  AndExpression
> 
> 
> On Wed, Nov 26, 2003 at 04:41:46PM +0100, SHEIKH Sajjad wrote:
> > Hi all,
> > The following statement does not seem to work and I have no idea why?
> > 
> >   <xsl:when test="@objname='Document' and ($doc_scope!='EFSA' or 
> > $doc_scope!='No dissemination')">
> > 
> > Does anyone know why it doesn't work?
> > /s
> 
> No, although one possible problem is that $doc_scope cannot ever be both
> 'EFSA' and 'No dissemination' at the same time. It appears that the
> second part of your 'and' is always true (and thus useless).

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