Crystal Reports if (blah) IN [ ] problem

Hi,

so I know I can do something like

Code:

{Contract Units.UNIT #} in ["7610","7611","7612","7613","7614","7615","7616","7617","7853","7858","7859","7860"]

but how can I do

Code:

{Contract Units.UNIT #} NOT in ["7610","7611","7612","7613","7614","7615","7616","7617","7853","7858","7859","7860"]

It seems that CR is not accepting the NOT before the IN ... Im using Seagate CR 6 (the one that comes with VB6 package!)

Thanks a lot