[Schneider]

Got it! Tested and works!

pawn Code:

CMD:v(playerid,params[])
{
    if(InDM[playerid]) return GameTextForPlayer(playerid, "~w~You cannot spawn vehicles in ~r~DM",2000,5);
    new modelid[32];
    if(sscanf(params, "s[32]", modelid)) return ShowPlayerDialog(playerid, Dialog_Vehicles, DIALOG_STYLE_LIST, "{ffffff}Vehicle categories:", "Airplanes\nHelicopters\nBikes\nConvertibles\nIndustrial\nLowriders\nOff Road\nPublic Service\nSaloons\nSport Vehicles\nStation Wagons\nBoats\nTrailers\nUnique\nRC Vehicles", "Select", "Back" );
    if(400 <= strval(modelid) <= 611)
    {
        VehicleSpawner(playerid, strval(modelid));
    }
    else
    {
        new model = GetVehicleModelIDFromName(modelid);
        if(400 <= model <= 611)
        {
            VehicleSpawner(playerid, model);
        }
        else
        {
            GameTextForPlayer(playerid, "~w~Invalid ~r~Name/ID!",2000,5);
        }
    }
    return 1;
}