Add multiple objects to the active layer in real time?

Basically, just like the addObject() actuator. I want to be able to add multiple objects from an inactive layer in real time. I’m using version 2.49

I’m guessing I can either do this by

  1. Adding all objects from a designated layer

  2. Adding all objects that are in a designated group

  3. Adding all objects that share the same property

Anyone know a way to set any one of these three up?