...How bot(bgb) can be control block height...
What do you mean?
i m used 2 pc,So I know if this bot cheats me,when i fight with this bot,my bolck height stops around 1-2 block,and boom my hunter is dead.This is not only 1 time but often.this is only happen when i fight with this bot,so this is not my pc problem
Do you mean you have 2 pc's and the block height's don't match when you fight that bot? I don't really understand it but it sounds like a serious enough thing that maybe Snailbrain should comment? I know the blocks get delayed on a slower computer, when I tried I had that problem, the blocks did not update for a long time. It would be better some kind of way to prevent bots altogether.