[rules-users] Does evaluating two facts of same type in one when condition works?

Hi There, Im wondering weather the Following rule would work properly, rule "abc" when a : PlaceHolder(value == 1) b : PlaceHolder(value == 2) then System.out.println("print"); ......................... workingmemory.insert(placeholderobject1); workingmemory.insert(placeholderobject2); workingmemory.fireAllRules(); .......................................... when i tried, the code is working fine, but How can the rule here is able to diffirentiate between two facts of same type? any help would be very much appriciated. Thank you, bala.