[Azzeto]

Thanks for all that but all I needed was

pawn Код:

AttachTrailerToVehicle(TrailerId[Random(random(sizeof(TrailerId))], GetPlayerVehicleID(playerid));//will attach one of those trailers randomly

Because I changed it to

pawn Код:

AttachTrailerToVehicle([ID of trailer], GetPlayerVehicleID(playerid));

So all I really needed was GetPlayerVehicleID(playerid)); :P