[Beckett]

You need to tell the machine what SCM is, it's not defined.

pawn Код:

#define SCM SendClientMessage

This does the job.

Same for IsAPlane, the stock does not exist.

pawn Код:

stock IsAPlane(vehicleid)
{
    switch(GetVehicleModel(vehicleid))
    {
        case 460,464,476,511,512,513,519,520,553,577,592,593: return 1;
    }
    return 0;
}