public OnPlayerStateChange(playerid, newstate, oldstate)
{
    new vehicleid = GetPlayerVehicleID(playerid);//variable to get vehicle ids
    if(GetVehicleModel(vehicleid) == 425 && gPlayerClass[playerid] == ASSAULT && gPlayerClass[playerid] == SNIPER && gPlayerClass[playerid] == MEDIC && gPlayerClass[playerid] == ENGINEER && gPlayerClass[playerid] == SPY && gPlayerClass[playerid] == SPECIAL_FORCE)//if player is pilot then he can drive
    {
        SendClientMessage(playerid, COLOR_RED, "You Need to  be an Airforce to fly Hunter");//messages goes to the player that he can't drive the hunter
        RemovePlayerFromVehicle(playerid);//get u off from the hunter
    }

    if(GetVehicleModel(vehicleid) == 520 && gPlayerClass[playerid] == ASSAULT && gPlayerClass[playerid] == SNIPER && gPlayerClass[playerid] == MEDIC && gPlayerClass[playerid] == ENGINEER && gPlayerClass[playerid] == SPY && gPlayerClass[playerid] == SPECIAL_FORCE)//if player is pilot then he can drive
    {
        SendClientMessage(playerid, COLOR_RED, "You Need to  be an Airforce to fly Hydra");//messages goes to the player that he can't drive the hydra
        RemovePlayerFromVehicle(playerid);//get u off from the hydra
    }

    if(GetVehicleModel(vehicleid) == 432 && gPlayerClass[playerid] == ASSAULT && gPlayerClass[playerid] == SNIPER && gPlayerClass[playerid] == MEDIC && gPlayerClass[playerid] == AIRFORCE && gPlayerClass[playerid] == SPY && gPlayerClass[playerid] == SPECIAL_FORCE)//if player is Soldier then he can drive
    {
        SendClientMessage(playerid, COLOR_RED, "You Need to  be an Engineer to drive Tank");//messages goes to the player that he can't drive the tank or rhino
        RemovePlayerFromVehicle(playerid);//get u off from the tank or rhino
    }

    if(GetVehicleModel(vehicleid) == 447 && gPlayerClass[playerid] == ASSAULT && gPlayerClass[playerid] == SNIPER && gPlayerClass[playerid] == MEDIC && gPlayerClass[playerid] == ENGINEER && gPlayerClass[playerid] == SPY && gPlayerClass[playerid] == SPECIAL_FORCE)//if player is pilot then he can drive
    {
        SendClientMessage(playerid, COLOR_RED, "You Need to  be an Airforce to fly Sea Sparrow");
        RemovePlayerFromVehicle(playerid);//get u off from the sea sparrow
    }
	return 1;
}