Jun Wu,
I am not sure what your comments mean in this technical forum.
If at all you are asking for more details then it is as below.
We all know that UI5 is designed keeping user experience as first and then system.
I am thinking if I can this piece solved then it will be more value addition to system as well.
please let me know what else i could add more technical details so that I can be clear.
Thanks,
Amara.