Problem with same active objects

[ClickJoe]

Hello, in my game, every 5 seconds I create new enemies.

Unfortunately when there are 2 enemies of the same type (same active object) their variables are the same, so if I kill one, also the other one dies.
How to fix this problem?
Thanks

[DaveC]

the variables are not linked, even if they're duplicate objects.. so you must not be defining specifically which object you want to destroy/change a variable for.