diff --git a/AIStudio.Wpf.DiagramDesigner/Models/Serializables/BlockDesignerItem.cs b/AIStudio.Wpf.DiagramDesigner/Models/Serializables/BlockDesignerItem.cs
index 495dc67..dc716c9 100644
--- a/AIStudio.Wpf.DiagramDesigner/Models/Serializables/BlockDesignerItem.cs
+++ b/AIStudio.Wpf.DiagramDesigner/Models/Serializables/BlockDesignerItem.cs
@@ -18,6 +18,7 @@ namespace AIStudio.Wpf.DiagramDesigner
         public BlockDesignerItem(BlockDesignerItemViewModel viewmodel) : base(viewmodel)
         {
             Containers = new List<BlockItemsContainerInfoItem>(viewmodel.Containers.Select(p => new BlockItemsContainerInfoItem(p)));
+            Flag = viewmodel.Flag;
         }
 
 
@@ -26,5 +27,11 @@ namespace AIStudio.Wpf.DiagramDesigner
         {
             get; set;
         }
+
+        [XmlAttribute]
+        public string Flag
+        {
+            get; set;
+        }
     }
 }