Confiforms repopulate fields from last entry Edited

[Alain Grandjean]

I have a confiform with an action button that when pressed will pull the data from the last entry in the database that the form creates and repopulate the fields in the form. 

I am unsure on how to pull data from that database. Once I know how to do that, the autofill portion is simple. 

I noticed that there was a virtual function called ._previousState, but it seems that you can only use that for filtering.

Does anyone have any recommendations on how I can accomplish this?