[SilentSoul]

pawn Код:

CMD:skin(playerid, params[])
{
    new skinid, string[128];
    if(sscanf(params, "d", skinid))
        return SendClientMessage(playerid, COLOR_RED, "USAGE: /s(kin) [skinID].");
    else if(skinid < 0 || skinid > 299) return SendClientMessage(playerid, 0xFF000000, "You can't use skin above 299 or lower than 0.");
    SetPlayerSkin(playerid, skinid);
    format(string, sizeof(string), "You have set your skinID to %d.", skinid);
    SendClientMessage(playerid, COLOR_GREEN, string);
    return true;
}

That should work , pds2k12 has made an error sorry i didn't notice that