public HtmlString GetPrices(int articleId)
    {
      Bm2s.Connectivity.Common.Article.Price connect = new Bm2s.Connectivity.Common.Article.Price();
      connect.Request.ArticleId = articleId;
      connect.Get();

      return connect.Response.Prices.ToHtmlJson();
    }
    public HtmlString SetPrice(Price price)
    {
      Bm2s.Connectivity.Common.Article.Price connect = new Bm2s.Connectivity.Common.Article.Price();
      connect.Request.Price = price;
      connect.Post();

      return connect.Response.Prices.FirstOrDefault().ToHtmlJson();
    }
    public HtmlString SetValue(Article article, List<Price> prices)
    {
      Bm2s.Connectivity.Common.Article.Article connect = new Bm2s.Connectivity.Common.Article.Article();
      connect.Request.Article = article;
      connect.Post();

      Bm2s.Connectivity.Common.Article.Price connectPrice = new Bm2s.Connectivity.Common.Article.Price();
      foreach (Price price in prices)
      {
        price.Article = connect.Response.Articles.FirstOrDefault();
        connectPrice.Request.Price = price;
        connectPrice.Post();
      }

      return connect.Response.Articles.FirstOrDefault().ToHtmlJson();
    }