I have set my planning variable to be nullable. But using this the constucution heuristic initializes variables to null values and i think this is a waste of time for computing the optimal solution. From the documents you can overwrite this using uninitializedEntityFilter. But it doesnt show the actual UninitializedTaskFilter.class. What would be the content of this class? Thanks! -- View this message in context: http://drools.46999.n3.nabble.com/uninitializedEntityFilter-example-tp402... Sent from the Drools: User forum mailing list archive at Nabble.com.