[rules-users] Controlling Rule Execution

All, I'm new to Drools and I'm faced with what seems to be a pretty trivial task that's taken a lot longer than expected. I'm working mainly with distances and am looking for an plain English response to this trivial problem. Here's the problem: - Activate all things within x miles. - If nothing is within x miles, activate all things within y miles. It seems pretty straight forward but here's my dilemma. If I execute on y miles first, everything within x miles will also be activated. I need to ensure the things between x and y miles aren't activated if anything is within x miles of a certain fact. Does this make any sense to anyone? I'm have a hard time grasping the proper approach and have looked into activation groups, etc. but haven't had any luck. Any help is GREATLY appreciated!!! Thanks in advance! Jason -- View this message in context: http://drools.46999.n3.nabble.com/Controlling-Rule-Execution-tp4025231.html Sent from the Drools: User forum mailing list archive at Nabble.com.