Hi All, Is there a way in which we can use a collection in LHS of a rule (to be used in contains, memberof) , which can be managed in Guvnor containing big list of elements (may be 10,000). Having this in a Database is an option but considering the maintenance of the list where in a user(who doesn't have Database Knowledge) has to update the list frequently, can this collection be maintained in Guvnor and used in LHS of a rule. Thanks, NP -- View this message in context: http://drools.46999.n3.nabble.com/Can-we-use-a-Collection-in-LHS-maintain... Sent from the Drools: User forum mailing list archive at Nabble.com.