First, I get alivenum (I need it) and then check howmany are people alive, so this loop is ok I think.
Second, I don't recognize bots by is_get_user_bot_by_ip. It was replaced by is_user_bot.
Third, I installed MetaMod v1.17.4, AMX v0.9.9a + dlls from v0.9.9b and zBot.
I know now that's report problem to AMX

, sorry.
cvar name has changed
All now seems to be working correctly, but I think there are error I don't know.