/**
 * Apply tags in Intercom when tags are modified in WP Fusion
 *
 * @return void
 */
function wpf_send_tags_to_intercom( $user_id, $tags ) {

    if( isset( $_GET['wpf_action'] ) ) {

        $intercom = wpf_connect_to_intercom();

        $contact_id = wpf_get_intercom_contact_id( $user_id );

        if( $contact_id !== false ) {
            $intercom->apply_tags( $tags, $contact_id );
        }

    }

}
add_action( 'wpf_tags_modified', 'wpf_send_tags_to_intercom', 5, 2 );