public static byte[] openUIOption(int type, int npc) {
            MaplePacketLittleEndianWriter mplew = new MaplePacketLittleEndianWriter(10);
            mplew.writeShort(SendPacketOpcode.OPEN_UI_OPTION.getValue());
            mplew.writeInt(type);
            mplew.writeInt(npc);

            
            return mplew.getPacket();
        }