Need Help With Mission 7!

[Vasilisssk (RUS)]

In this mission i am try to get medal for destroying armored train...
I am do it again it again but i am do not have achievement yet! :mad:
What it can be?

[Vasilisssk (RUS)]

Oh oh oh... Sorry for my stupid!
I am think it is because i am trying to use a cheats! ))) Sorry Again!