yes, bomb in zone is working in general, dont know about that specific bomb you are trying though....
BUT, in my view there is a problem with this trigger function, as it doesnt detect whether the bomb really did impact in the zone, but triggers the action as soon as it flies within the zone...so if you drop your bomb, but overshoot the zone, it will still trigger it as "bomb in zone" and trigger the set action, even if the bomb flies past the zone, detonatiing somewhere behind the zone....