[Dr]

pawn Код:

DisablePlayerCheckpoint(playerid);

Also when you created the "simplejobrunning" variable do this instead:

pawn Код:

simplejobrunning[MAX_PLAYERS];

Then change the code to this:

pawn Код:

public OnPlayerExitVehicle(playerid, vehicleid)
{
    if(simplejobrunning[playerid] == 1)
    {
        simplejobrunning[playerid] = 0;
        SendClientMessage(playerid, COLOR_RED, "You're job was canceled due to exiting the Vehicle");
        DisablePlayerCheckpoint(playerid);
    }
    return 1;
}

The else is not needed.