I'm afraid it's not possible to have 2 actions updating the same collection directly like that. What you can do is create a window-less action with a window associated to it and add it in to the process with an automatic Add Note after it that copies the data in to a new Note.
However, if you can explain the reason behind wanting seperate Notes and Comments we can probaby come up with a much more elegant solution for you.
Thank you for your response. I need to seperate action for add note
because i create manual action on process design for Approve or Deny.
After they choose choice and type comment on window of note. they
need to see all comment on tree or tab of main document. Now i cannot
create query for show all comment in same tab. i can show seperate
comment of approve or deny on 2 tab.
Thank you and best regards,