"Add" action confirmation message doesn't behave as expected

[Jonathon]

I would like a confirmation message to appear on form save, something to the tune of:

This information will become locked once submitted. Confirm?

I tried to achieve this by setting the Form Saved event action to “Add”, and on the “Add” action require a confirmation. It works, the confirmation button shows up, but if you press “Cancel”, it still saves the form.

I also messed around with grouped actions to no avail. Any way we can get this behaviour?