How to add tags value in tags datatype programmatically in umbraco 9

if (articles != null && articles.Any() && blog != null)
            {
                foreach (var articleItem in articles)
                {
                    IContent newArticle = _contentService.Create(articleItem.Title, blog.Id, "article");
                    newArticle.SetValue("title", articleItem.Title);
                    newArticle.ParentId = blog.Id;
                    newArticle.SetValue("subTitle", articleItem.SubTitle);
                    newArticle.SetValue("shortSubTitle", articleItem.ShortSubTitle);
                    newArticle.SetValue("image", articleItem.ImageUrl);
                    newArticle.SetValue("imageAlt", articleItem.ImageAlt);
                    newArticle.SetValue("linkTitle", articleItem.LinkTitle);
                    newArticle.SetValue("articleUrl", articleItem.ArticleUrl);
                    newArticle.SetValue("fecha", Convert.ToDateTime(articleItem.PublicationDate));
                    newArticle.AssignTags("tags", articleItem.Taxonomies.ToArray<string>(), false, "default");
                    _contentService.SaveAndPublish(newArticle);
                }
            }

newArticle.AssignTags statement doesn't work in my example

Any help please?

Thanks