[[XST]O_x]

It won't work, at least I think so.

And you also had an extra parameter on GetPlayerWeapon.

pawn Код:

public AntiWeapon(playerid)
{
    for(new i = 1; i < 46; i++)
    {
        if(GetPlayerWeapon(playerid) == i)
       {
            Cheat(playerid, "Weapon Hack");
       }
    }
}

Should work.