do you mean you want an objective to be checked when you blow all of them up?
if so you could but in a condition box:
(getdammage bob1>=1 ) AND (getdammage bob2 >=1) etc
then in the activation box put:
"1" objstatus "DONE" (if , of course it's the first objective in your briefing)
Your question wasn't very clear. Â is that what you were asking?
EDIT:
slow slow slow!!! well hey I'm new to this forum!!