Bot aim and fire

Hello, i'm creating a bot and its ok, he can moves, but i dont know how to make him shoot, someonce can help me ?
I'm using AutoIT and the game is World of tanks. I thinked a lot of possibilitys but all they failed. What i do ?

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i cant post my email here , i can help to creat other bots to other game, just tell me, wot is difficult to bot, to move around is esay, but to shoor

There's bots already in wot and easily identifiable, be lucky to get 10 battles before banned.