[rules-users] Binding Not

I have a question on the return value of a not statement........ I have two fairly large rules in respect to the LHS when declarations. They are identical except for the fact that in one of them, I am checking to see if one more object exits, while in the other I am checking to see if it doesn't exist. It seems silly to try have duplicate rules expressively typed when this is the only difference. So what i tried to do was bind the value of the not statement as shown below.... rule "Rule Name" no-loop = true when ......... $msg : (or Message (description == "OK") not Message (description == "OK")) ......... then if ($msg == null) { createMessage("OK"); // } .... rest of RHS..... end I figured if the Message object didn't exist, null would be returned and assigned to the $msg variable. But it was not. For now I have it separated into two rules, but logically I would like to combine them, as every other part of the LHS and RHS match. Anyone have any suggestions? -- View this message in context: http://www.nabble.com/Binding-Not-tp14463587p14463587.html Sent from the drools - user mailing list archive at Nabble.com.