Hi all, I tried to use "not equal to" some sets in decision table but seem to have problems. Does anyone happen to know what I did wrong in the following code? meow:CatType( p:category -> ( p !="$1" && p !="$2" && p!="$3" ) ) Thanks very much! Wen. ------------------------------ Bored stiff? <http://us.rd.yahoo.com/evt=49935/*http://games.yahoo.com>Loosen up... Download and play hundreds of games for free<http://us.rd.yahoo.com/evt=49935/*http://games.yahoo.com>on Yahoo! Games. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users