[rules-users] Decision Table column testing for exists

Hi. I'm trying to figure out how to express a Condition that does the following: Column name: FeV1 exists Possible values: true, false, n/a I wish to test for the existence of an FeV1 fact and have a different condition in the rule generated, as follows: true, generates 'exists FeV1()' false, generates 'not FeV1()' n/a, generates nothing Is there some way to do this? Thanks, Herm -- View this message in context: http://drools.46999.n3.nabble.com/Decision-Table-column-testing-for-exist... Sent from the Drools: User forum mailing list archive at Nabble.com.