[Konstantinos]

Have you read GetVehicleModelIDFromName function?

pawn Код:

stock GetVehicleModelIDFromName(vehname[])
{
        for(new i = 0; i < 211; i++)
        {
                if (strfind(VehicleNames[i], vehname, true) != -1) return i + 400;
        }
        return -1;
}

It adds + 400 so it will be between 400-611.

So change to:

pawn Код:

if(vehid < 400 || vehid > 611) return SendClientMessage(playerid, COLOR_RED, "[ERROR]: Invalid Vehicle Name.");

and

pawn Код:

format(message, sizeof(message), "[Info] %s has spawned a %s (ID: %d).", name, VehicleNames[vehid - 400], vehid);