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-Guvnor-5-5-0-tp4030217p4030224.html Sent from the Drools: User forum mailing list archive at Nabble.com.