I did a test for this and actualy managed to get this live updating working. But in my case (because it also includes the point adding making the script significantly heavier, combined with its unoptimization) it is notibly more laggy to use. Still for reference you can see how i achieved it:
https://mega.nz/file/wMkCARpI#c5Gs0umPRbqpgZAToINO6MvMeh_agvev8PJT_FrfOcU
For those who look in the script: Note the update function tracking the interface and reacting to updates, which then does use some trick for saving and undoing the changes. It however does still allow CTRL+Z after usage, so on that it seems to behave properly. Maybe someone can optimize the behaviour for this though.