Removing all objects from a certain world.

Hello, I was trying make like a mini game in my server(its not mini actually), but i've encountered a few problems; i've solved some but still there's a major problem I am unable to solve... main server has alot of objects created in main game almost everywhere. I know there's an option in CreateDynamicObject to create an object in a certian world only but it would take me too much time to go thorough all the mapping and set virtualworld to 0 (currently, by default: -1).

So i was wondering if there's a easier and faster way to remove objects from ground from a certain world (or keep in a certain world only).

Note: using latest version of streamer.