Modifier users table doesn't update my new fields

Hello

I need to ad 4 fields in the users table to manage differents kinds of payed service
on my website.

I modified admin_user_system_settings.php so i can see my field, and data
but the update doesn't work at all.

A tried to modify the admin_user.php form to, but the fields dont update at all.

I'm unable to find where a have to change the script for that.
I have search an read all the forum but i can't find anything

Can you help me please ?
Philippe

You also need to use the admin_user_system_settings_post file to complete the PHP action.