Created a Model in Guvnor 5.5.0 with 3 fields - 2 Text, 1 java.util.List The model is verified and validated - correctly. Source looks like below declare FormatConfig fieldName: String regEx: String regExPatterns: java.util.List end While trying to create a Business Rule using the above created Model. The rule gets fired and works fine. rule "MyFormat" dialect "mvel" when config : FormatConfig( fieldName == "AMOUNT" ) then config.setRegEx( "123" ); retract( config ); end But, the moment I try to use the List, by only declaring a List in the "When" section, the rule stops working. rule "MyFormat" dialect "mvel" when config : FormatConfig( fieldName == "AMOUNT" ) regExPatterns1: java.util.List ( ) then config.setRegEx( "123" ); retract( config ); end My final intention is to modify the regExPatterns list in the "THEN" block -- View this message in context: http://drools.46999.n3.nabble.com/Usage-of-java-util-List-in-Drools-Guvno... 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

Hi, I need to modify the List field in my Config object. -- View this message in context: http://drools.46999.n3.nabble.com/Usage-of-java-util-List-in-Drools-Guvno... 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

Thanks How can I do this in Business Rule Editor. I should be able to use the editor instead of free form DRL -- View this message in context: http://drools.46999.n3.nabble.com/Usage-of-java-util-List-in-Drools-Guvno... 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