Native back button in wrapper

Hello, im considering wrapping my web app with BDK to launch it as a native app.

Im struggling with the native android back button.
I followed all the instructions i could, my current setup :

i have a app info element visible.
an event : android back button is clicked ==> go to preivous page, also tried go to page with params.

what im i missing? is it actually possible to overide the back button?

thank you very much