Hi. I understand that the "contains" operator works as follows (from the drools manual): 'contains' is used to check if a field's Collection or array contains > the specified value. > However, what if the fact itself is a collection and I want to know whether or not that collect contains an item? For example, say I had an ArrayList instance inserted as a fact in the rulebase and in one of my queries my predicate is to express that that ArrayList instance contains a certain object. Any ideas? Thanks! Raffi _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users