How to use "AA" Shells?

[Mogley]

So some of my vehicles have AA shells. I use them and fire them at a plane and they just Whiz right past the plane and explode around a km away. How to make them airburst near the plane instead of them just flying past and exploding km's away?

[Aktungbby]

Mogley!:Kaleun_Salute:

[bstanko6]

Those shells are flak shells. They are supposed to blow up near the planes and cause collateral damage. You don't need to hit the plane dead on, justnear them.

[Obltn Strand]

So some of my vehicles have AA shells. I use them and fire them at a plane and they just Whiz right past the plane and explode around a km away. How to make them airburst near the plane instead of them just flying past and exploding km's away?
Germans never invented a proximity fuse. Idea of aa fire is to create a barrage about 2 km away and prevent the aeroplane from making it's attack run.