Back button POC

Hi, I'm having huge difficulties in just setting up a proof of concept project regarding the back button support.

The project is published here and it's very simple: you have 4 pages, each one setting a value and moving to the next page, but if you use the back button it's not working.

I've tried many strategies, none with success.

I would appreciate your help, I know for sure I'm doing some really stupid mistake somewhere but I just can't see it.

Thanks a million.

None willing to help me there? I'm stuck like a noob here...

hi
are you using browser back button or application back button