MetaBox AIO - rwmb_profile_update_user_data - $data empty

Hey,

I've created custom fields to safe bank information. Now I want to modify the submitted data to encrypt the date to store it in the database.
But I can't modify the submitted data because the $data array is empty.

( The data the user submits is still saved to the database - but unmodified )

Using the following code to get the $data:

add_filter( 'rwmb_profile_update_user_data', 'modify_users_bank_data', 10, 2);

function modify_users_bank_data($data, $config) {
    print_r('<pre>');
    print_r($data);
    exit;
    return $data;
}