B4X FEED I need help to exit an application In B4XPages application

[practicalsoft]

I made an B4XPages application which is working fine and i need to exit application (not running in background) when i click a button.
Please help me. I used this code in B4XMainPage:
B4X:

محتوای بلوک کدها در دسترس شما نیست. برای مشاهده بلوک کدها، وارد انجمن شوید یاثبت نام کنید

and application is running in background like you see in log:
Logger connected to: 31001a734bec8500
--------- beginning of /dev/log/system--------- beginning of /dev/log/main~i:*** Service (starter) Create ***
** Service (starter) Start **
** Activity (main) Create, isFirst = true **
** Activity (main) Resume **
*** Service (starter) Create ***
** Service (starter) Start **
** Activity (main) Create, isFirst = true **
** Activity (main) Resume **
*** Service (starter) Create ***
** Service (starter) Start **
** Activity (main) Create, isFirst = true **
** Activity (main) Resume **

برای دیدن لینک ها باید ثبت نام کنید