create custome plugins for moodle mobile app

Hi everyone,

I am big surprise to see that i make changes in code/rename file as well in plugins files supported by moodle mobile app like page activity plugins.

All code change reflects in desktop browser, but not make any changes in page activity in moodle mobile app even rename file.

I want to know that how can i make changes for plugins like page activity which reflect in moodle mobile app.

i synch couple of time in moodle mobile app, re-login.

I used below configure

Moodle mobile version :  2.9.

Mobile : Android
My moodle website  version : 2.8.6+ (Build: 20150514)

Thanks in advance.