I'm trying to validate that there is a Factor in a collection using the global variable ownedProductFactorSet. I'm having trouble. I do not get an error, it just doesn't resolve to true. I've validated the ownedProductFactor set has the Factor Java class that is contained withing the ownedProductFactorSet: Factor String key String value Here is the code in the drl: global Set ownedProductFactorSet; rule "Owned Products" ruleflow-group "discount-pricing" lock-on-active true when not Factor(key == FactorKeys.DISCOUNT) String(FactorKeys.PHONE_PACKAGE memberOf ownedProductFactorSet) Factor(key == RulesKeys.WIRELESS) then logger(kcontext).info("SUCCESS - *******************************"); insert(new Factor(FactorKeys.DISCOUNT)); end It never gets to the consequence (RHS - "then" part) of this rule. If I comment out the following line: String(FactorKeys.PHONE_PACKAGE memberOf ownedProductFactorSet) It will work. Any help with the memberOf keyword is greatly appreciated. Thanks, -dxande6 -- View this message in context: http://drools.46999.n3.nabble.com/Drool-5-memberOf-problem-tp2953475p2953... Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users