i have a class ChangeMoveFilter which implements SelectionFilter<ChangeMoveSelector> to sort out moves that break hard constraints. In the config it looks like this <constructionHeuristic> <queuedEntityPlacer> <entitySelector id="placerEntitySelector"> <cacheType>PHASE</cacheType> </entitySelector> <changeMoveSelector> *<filterClass>solver.move.ChangeMoveFilter</filterClass>* <entitySelector mimicSelectorRef="placerEntitySelector"/> <valueSelector> <cacheType>PHASE</cacheType> </valueSelector> </changeMoveSelector> </queuedEntityPlacer> </constructionHeuristic> However I am getting the impression that the overridden accept function is called before anything changed in the entity. Because the (only) planningvariable of the entity is still null, which would never be able to happen in my understanding. Am i missing something or is the filter move called before anything changes in the given entity? -- View this message in context: http://drools.46999.n3.nabble.com/SelectionFilter-ChangeMove-question-tp4... Sent from the Drools: User forum mailing list archive at Nabble.com.