Helme nur Bei Nrg e.t.c

public OnPlayerEnterVehicle(playerid, vehicleid, ispassenger)
{
new modelid = GetVehicleModel(vehicleid);
if(modelid == 522)
{
SetPlayerAttachedObject(playerid, 1, 18645, 2, 0.07, 0, 0, 88, 75, 0);
}
return 1;
}

public OnPlayerExitVehicle(playerid, vehicleid)
{
new modelid = GetVehicleModel(vehicleid);
if(modelid == 522)
{
RemovePlayerAttachedObject(playerid, 1);
}
return 1;
}

http://wiki.sa-mp.com/wiki/GetVehicleModel

Best Regards.

Edit: RemovePlayerAttachedObject braucht nur 2 Parameter.
Siehe http://wiki.sa-mp.com/wiki/RemovePlayerAttachedObject.