public static MaplePacket moveAndUpgradeItem(MapleInventoryType type, IItem item, short oldpos, short newpos) {//equipping some items
        MaplePacketLittleEndianWriter mplew = new MaplePacketLittleEndianWriter();
        mplew.writeShort(SendOpcode.MODIFY_INVENTORY_ITEM.getValue());
        mplew.write(new byte[]{1, 3, 3});
        mplew.write(type.equals(MapleInventoryType.EQUIPPED) ? 1 : type.getType());
        mplew.writeShort(oldpos);
        mplew.write(0);
        mplew.write(1);
        mplew.writeShort(oldpos);
        addItemInfo(mplew, item, true);
        mplew.write(2);
        mplew.write(type.equals(MapleInventoryType.EQUIPPED) ? 1 : type.getType());
        mplew.writeShort(oldpos);//oldslot
        mplew.writeShort(newpos);//new slot
        mplew.write(0) ;//?
        return mplew.getPacket();
    }