How to pass variable back and forth between page through bottomnavigationbar?

I try to sending variable from one page to second page through BottomNavigationBar switching page and send variable at same time. but I don't know how to send variable through switching page.

https://stackoverflow.com/questions/66684621/how-to-pass-variable-back-and-forth-between-page-through-bottomnavigationbar March 18, 2021 at 12:06PM