public string Add(Article article) { _e6060 = article.Quantity.ToString(); Article parent = article.Parent; if (parent != null && parent.IsValid) { if (utility.IsLinearPlanType(parent.Type)) { _e6060 = parent.Quantity.ToString(); } } if (utility.IsLinearPlanType(article.Type) && this.E6060 == KD.StringTools.Const.Zero) { _e6060 = utility.GetQuantityByOccurrence(article.CurrentAppli, article.ObjectId); } return(E6063 + Separator.DataElement + this.E6060 + Separator.DataElement + E6411); }