Update article name when updating products in Fortnox

functions.php

<?php

/**
 * @snippet       WooCommerce - Fortnox plugin by Redlight Media - Update Article name to article in Fortnox via functions.php
 * @author        Redlight Media AB / Christopher Hedqvist
 * @compatible    WooCommerce 3.5.3
 */
function redlight_update_article( $article, $product_id) {
  $WC_Product = wc_get_product($product_id);
  $article->Article['Description'] = $WC_Product->get_name();
  return $article;
}
add_filter('obj_fortnox_article_data_before_update', 'redlight_update_article', 10, 2 );