[Francis.]

Change this:

pawn Код:

if (strcmp("/mycommand", cmdtext, true, 10) == 0)
    {
        TuneVehicleRandomly(vehicleid);
        return SendClientMessage(playerid,-1,"Your car has been tuned.");
        return 1;
    }

for this:

pawn Код:

if (strcmp("/mycommand", cmdtext, true, 10) == 0)
    {
        if(IsPlayerInAnyVehicle(playerid)){
            TuneVehicleRandomly(GetPlayerVehicleID(playerid));
            SendClientMessage(playerid,-1,"Your car has been tuned.");
            return 1;
        } else return SendClientMessage(playerid, 0xFF0000FF, "You are not in a car."),1;
    }