addAction `profile_update` doesn't work

Hi everyone
I did a simple plugin to customize the wordpress registration form. Basically I added few more fields and it seems work very well.
My problem is to edit and then update this new fields. So i tried to do another stupid plugin using
add_action(‘profile_update’, ‘update_fields_new’);
So the complete code is

[Code moderated as per the Forum Rules. Please use the pastebin]

Just to try I printed out on the user profile page the field address and when i want to change it and update it, it doesn’t and remains as the same, instead, the others on the same page, eg the nickname or the First name etc changed.
How can I update this new field?

Thank you