Thanks Macguba that worked, but ive got one problem.
The hint comes up to ssay that the objective is complete but it doesnt tick the objective on the briefing.
in the activation field i have the following.
"obj_1" objStatus "DONE"; hint "Objective complete: Shilka destroyed."
see anything wrong?, ive checked through the other objectives, and thought that it might have the "obj_1" objStatus "DONE" in it, (i thought they would conflict) but they're different.