[Dr]

Use 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;
}

Also make sure you replaced any:

pawn Код:

simplejobrunning

With:

pawn Код:

simplejobrunning[playerid]