I am getting this error 10 that other people have been getting when trying to clone an object

I have 2 objects COckroach and Dead Cockroach - the cockroach object appears from time to time and is added to the room

the problem is, I want the player to be able to squish the bug and take it

so the obvious choice was to remove the cockroach object, and replace it with a cloned dead cockroach item - but it says the array is locked, etc

Can you post the asl code for squishing of the cockroach? I'm not lure exactly what you've done.