How to re-spawn entity/How to set entity to null?

[daemonicky]

Id like to spawn-remove entity at will. I have reference to in global variable. When I remove it, the reference remains but I'd like to set it to zero or null so I can spawn it later. How do I set null entity?

I guess solution might be to create global variable NullEntity and use it as null, but is there some more natural way to it?[/code]

[mh]

Look at how entities like lava balls work. Should give you a good starting position.

[Spike]

[frag.machine]