public static byte[] getShowCoreGain(int core, int quantity) {
            MaplePacketLittleEndianWriter mplew = new MaplePacketLittleEndianWriter();

            mplew.writeShort(SendPacketOpcode.SHOW_STATUS_INFO.getValue());
            mplew.write(30);
            mplew.write(22);
            mplew.writeInt(core);
            mplew.writeInt(quantity);


            return mplew.getPacket();
        }