[rules-users] How can I select planning-entities in the accumulate source-pattern based on a list of planning-variables?

Hi, I am kind of stuck in writing a rule : I have PeopleMatch facts in working memory. Each PeopleMatch has a number of persons:  PeopleMatch().getPeople = List<Person> I have planning-entities (Tasks) which have a planning-variable Person. Now I would like to create a rule to loop over the PeopleMatch objects, gather all Tasks for the people of this match and do some calculation with all tasks. This is what I have for the moment: rule "matchPeopleTasks"    when         $match : PeopleMatch()         $people :  List() from $match .people         $match: Number( intValue < 0 )                    from accumulate( $task : Task(handler == $people),                                     init( Matcher matcher = $match.getMatcher()),                                     action( matcher.addTask( $task ); ),                                     reverse( matcher.removeTask( $task ); ),                                     result( matcher.getMatch() ) );   then         ... end   The problem area is of course the "accumulate( $task : ProjectTask(handler == $people)," How do I select all tasks in the accumulate function, based on a list of people? Thanks, Michiel ----------------- http://www.codessentials.com - Your essential software, for free! Follow us at http://twitter.com/#!/Codessentials