Xpath expression with " | "

Hi,

i found on an old xsl an "Xpath" expression like this:


<xsl:if test=" /AAA /BBB/( CCC | EEE ) [ . != '']">
      <xsl:apply-template.........

i test it with xalan/Tomcat (last version) and have the error for this
line:

A stage of site was awaited after the token ''/'' or ''//''

the expression   /BBB/( CCC | EEE )  is not valid ?
Is there an alternativ grammar for multi union  ?

merci