public static MaplePacket updateSkill(int skillid, int level, int masterlevel) {
        // 1E 00 01 01 00 E9 03 00 00 01 00 00 00 00 00 00 00 01
        MaplePacketLittleEndianWriter mplew = new MaplePacketLittleEndianWriter();
        mplew.writeShort(SendPacketOpcode.UPDATE_SKILLS);
        mplew.write(1);
        mplew.writeShort(1);
        mplew.writeInt(skillid);
        mplew.writeInt(level);
        mplew.writeInt(masterlevel);
        mplew.write(1);
        return mplew.getPacket();
    }