diff --git a/AIStudio.Wpf.DiagramDesigner/Themes/ConnectorItem.xaml b/AIStudio.Wpf.DiagramDesigner/Themes/ConnectorItem.xaml
index 3de5c6e..5da582b 100644
--- a/AIStudio.Wpf.DiagramDesigner/Themes/ConnectorItem.xaml
+++ b/AIStudio.Wpf.DiagramDesigner/Themes/ConnectorItem.xaml
@@ -148,8 +148,8 @@
         </Grid>
         <DataTemplate.Triggers>
             <DataTrigger Binding="{Binding BeAttachTo}" Value="True">
-                <Setter TargetName="innter" Property="Fill" Value="#f73438" />
-                <Setter TargetName="innter" Property="Stroke" Value="#f73438" />
+                <Setter TargetName="innter" Property="Fill" Value="#4d97ff" />
+                <Setter TargetName="innter" Property="Stroke" Value="#4d97ff" />
             </DataTrigger>
             <DataTrigger Binding="{Binding DisableAttachTo}" Value="True">
                 <Setter TargetName="innter" Property="Fill" Value="Gray" />
@@ -171,7 +171,7 @@
             <DataTrigger Binding="{Binding BeAttachTo}" Value="True">
                 <Setter TargetName="innter" Property="Margin" Value="-1" />             
                 <Setter TargetName="innter" Property="StrokeThickness" Value="1" />
-                <Setter TargetName="innter" Property="Stroke" Value="#f73438" />
+                <Setter TargetName="innter" Property="Stroke" Value="#4d97ff" />
             </DataTrigger>
             <DataTrigger Binding="{Binding DisableAttachTo}" Value="True">
                 <Setter TargetName="innter" Property="Margin" Value="-1" />
diff --git a/AIStudio.Wpf.DiagramDesigner/ViewModels/BlockViewModel/BlockDesignerItemViewModel.cs b/AIStudio.Wpf.DiagramDesigner/ViewModels/BlockViewModel/BlockDesignerItemViewModel.cs
index 5b2f417..85a305b 100644
--- a/AIStudio.Wpf.DiagramDesigner/ViewModels/BlockViewModel/BlockDesignerItemViewModel.cs
+++ b/AIStudio.Wpf.DiagramDesigner/ViewModels/BlockViewModel/BlockDesignerItemViewModel.cs
@@ -76,6 +76,8 @@ namespace AIStudio.Wpf.DiagramDesigner
                         AddContainer(blockitemsContainerInfo);
                     }
                 }
+
+                Flag = designer.Flag;
             }
         }