[Blast3r]

Код:

CMD:untow(playerid, params[])
{
    new vehicleid = GetPlayerVehicleID(playerid);
	if(IsTrailerAttachedToVehicle(vehicleid))
	{
		DetachTrailerFromVehicle(vehicleid);
		SendClientMessage(playerid, COLOR_GREY, "INFO:{FFFFFF} You stopped towing a vehicle");
		return 1;
	}
	return 1;
}

I didn't test it, but didn't give me any errors when I placed it in my script, so yeah, good luck.