public static byte[] changeAllianceNotice(int allianceid, String notice) {
            MaplePacketLittleEndianWriter mplew = new MaplePacketLittleEndianWriter();

            mplew.writeShort(SendPacketOpcode.ALLIANCE_OPERATION.getValue());
            mplew.write(28);
            mplew.writeInt(allianceid);
            mplew.writeMapleAsciiString(notice);

            return mplew.getPacket();
        }