If VBScript is the default script language (Tools | Application Options | General | Default script language), <> is the not equal comparison operator.
http://www.kinook.com/VisBuildPro/Manual/miscopt.htm
http://www.tizag.com/vbscriptTutoria...toperators.php
For other script languages, use the appropriate operator for that language.
With VBScript, that expression works as expected in our tests -- see the attached sample and log.
One possibility:
http://www.kinook.com/Forum/showthread.php?t=927