add button to a maintenance view

I am working with maintenance views and user-defined events in maintenance views at the moment.

Now I'd like to add a button to the maintenance view that will show a popup with recent changes to the selected line of the database table.

Is that possible with user-defined events or should I modify the generated dynpros manually. But then, will the modifications be deleted if I will have to regenerate the maintenance view in the future (e.g. when I might add a field to the database table)?