[Konstantinos]

OnPlayerEnterVehicle is called when a player starts to enter a vehicle, so the player is not in yet. Use OnPlayerStateChange instead.

pawn Код:

public OnPlayerStateChange(playerid, newstate, oldstate)
{
    if(newstate == PLAYER_STATE_DRIVER)
    {
        if (GetVehicleModel(GetPlayerVehicleID(playerid)) == 448)
        {
            if (Pizzajob == 1) SendClientMessage(playerid,0xF5FF00FF, "[JOBHELP]:Use /deliverpizza to start your job");
            else if (Pizzajob == 0) RemovePlayerFromVehicle(playerid);
        }
    }
    return 1;
}