public static byte[] guildCapacityChange(int gid, int capacity) {
            MaplePacketLittleEndianWriter mplew = new MaplePacketLittleEndianWriter();

            mplew.writeShort(SendPacketOpcode.GUILD_OPERATION.getValue());
            mplew.write(64);
            mplew.writeInt(gid);
            mplew.write(capacity);


            return mplew.getPacket();
        }