BuddyPress.org

OK so I’m struggling with this one for hours now and can’t get it to work, but it feels like there is a strait forward simple and elegant solution. All I want to do is to validate the value of a custom xprofile email field when a member is editing its info. Trying to mimic how xprofile_screen_edit_profile() works with returning error before saving, I tried to add_action/add_filter/do_action/apply_filter to xprofile_updated_profile, xprofile_screen_edit_profile, bp_actions, bp_screens, xprofile_data_value_before_save and more, but I failed every time probably because I don’t know how to properly use them. All I want to do is simple as:

function my_validate_email () {
    if (!is_email($field_id->value))
bp_core_add_message( __( 'That email address is invalid. Check the formatting and try again.', 'buddypress' ), 'error' );
//and redirect back to editing, same like for the required fields
}
add_action( 'bp_hook_here', 'my_validate_email' );

Please help with the correct way of doing this, possibly without using additional plugin
Thanks so much