BuddyPress.org

I’m looking for new users to be able to select from the default WP roles available (Subscriber/Editor/Admin/Contributor). Currently, my WP is set up so new users are Subscriber by default, but I want this to be overwritten by a selection on the registration form.

So far, I have a new xprofile group called ‘User Role’ with the four options, and within by bp-custom.php file I have:

function register_role($user_id) {
    $user_role = strtolower(xprofile_get_field_data('User Role', $user_id));
    switch($user_role) {
        case "Editor":
            $new_role = 'editor';
            break;
        case "Contributor":
            $new_role = 'contributor';
            break;
		case "Admin":
            $new_role = 'admin';
            break;
		case "Subscriber":
            $new_role = 'subscriber';
            break;
    }
    wp_update_user(array(
        'ID' => $user_id,
        'role' => $new_role
    ));
}
add_action( 'user_register', 'register_role');

This doesn’t work though, it still creates new user entries with the default role of Subscriber. I have also tried the plugin WordPress Roles at Registration, with also didn’t work. Any ideas?