Set Level Streaming Default to 'Something'?

Hi in order to stream levels I also need to unload them. I’m setting a variable of type* level streaming* to the current level so that it can be unloaded when the next level comes in. But this throws an error because my *UnloadMe *variable has no default value. How dStreamingLevelUnload.PNGo I set a *Level Streaming *Default to something other than none?