anonymous wrote : even if when the rule doesn't evaluate to setOutcome("toDeliver"), it return null, This IS the problem. And yes it does not make a difference if you remove the second call to the rule, I was just wondering *why* you did that Oh, and the documentation you refer to is not a full example. It just demonstrates that a descsionrule and an assignment rule should call different methods for the result. Look in the seam source for the full examples View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4217468#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...