Unable to change state on prev . For multipage

[lazynewt]

Moving to a new state with Next(beforeStep) is great however when you click prev you do not get taken to the previous state/page. Instead the dialog boxes appear on the current page. Ideally having a beforePrev that initiates similarly like the beforeStep does.

to be clear I can go to the next page/state but cannot go back. Any ideas ??? even disabling the prev button would be somewhat of a fix ? Thanks and great work.