Hi, I have a rule with the condition that looks like below: when item : Item() list : ArrayList(size > 0) from collect ( SubItem( type == "X" ) from item.getSubItemList()) When I execute this rule, it seems to me that the order of elements in the collected list is not the same as they were in the subItemList of the item. Is there a simple way to ensure the same ordering in both original list and the collected list without using accumulate or sorted list? -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/Ordering-of-collected... Sent from the Drools - User mailing list archive at Nabble.com.