Challenges that need fixed

The first one is the Support Airburst Challenge.  I'm not sure what needs fixed either its tracking wrong or what but this one sucks.  I know the tricks, i've used the tricks and sometimes they work and others they don't.  Right now on players for me if its not a direct hit it doesn't count and if it is, I get maybe 10 points in total.  I can't imagine the poor folks that grinded this out when it was 3000 what a slog that was I imagine.

Second is the Engineer challenge to deal damage to helicopters with launchers.  I've shot down choppers with rpgs no credit, shot down with stingers, no credit.  Other people say they have absolutely no issues, I don't get it.  Please fix these!