Hi, Am trying to model some rules using drools templates. Currently the data inputs to rule templates are only strings, I need to be able to define a compound value restriction set for the rule i.e if fact attribute is present in a list. (see sample below). e.g. template header dealers template "my-template" rule "my-rule" when $order : Order(dealer in (@{dealers})) then System.out.println("Order is present in dealer" end end template I am trying to compile this template by passing it an Object which has a dealers attribute which is essentially a List<String>. Short of creating a function which sends back a comma separated representation of the list, does the drools compiler provide any option to send a list. ~ Barry