xsl:if test... Doesn't like the "[" when namespace is

I cannot transform this:

<xsl:if test=".[FieldNumber='26']">

This *did* work with the namespace: http://www.w3.org/TR/WD-xsl",
But since I changed to "http://www.w3.org/1999/XSL/Transform" I get an error 
(in cooktop) stating that:

Expected token 'eof' found '['.
.-->[<--FieldNumber='26']

Can anyone shed some this?
~Darryl
(Thanks for the great list! Keep it up!)




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