I have a rule below and the "||" operator is giving me null pointer exception (NPE) when the rule is invoked. This NPE problem is only happening is 6.0. This NPE problem does not happen in 5.x and runs without and issues in 5.x Is this a bug in Drools 6.0? Below is my simple rule: rule "rule using Map" dialect "mvel" when $map: Map( this["id"] == "1000" || // "||" operator works fine in 5.x but gives NPE in 6.0 this["first"] == "Johna" ) then System.out.println("customer is: " + $map["first"] + " " + $map["last"]); end Please let me know if this is a bug in 6.0x. thanks! -- View this message in context: http://drools.46999.n3.nabble.com/condition-operator-give-NPE-in-6-0-but-... 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