Epicor BPM中自定义代码弹出错误提醒

PublishInfoMessage(ex.ToString(), Ice.Common.BusinessObjectMessageType.Information, Ice.Bpm.InfoMessageDisplayMode.Individual, "", "");

 throw new Ice.Common.BusinessObjectException(new Ice.Common.BusinessObjectMessage("不能删除已经关闭的订单"){
            Type=Ice.Common.BusinessObjectMessageType.Error
        });