diff --git a/Machining/DemoUseMachiningProject.cs b/Machining/DemoUseMachiningProject.cs
index 47ed66e..6289040 100644
--- a/Machining/DemoUseMachiningProject.cs
+++ b/Machining/DemoUseMachiningProject.cs
@@ -38,7 +38,7 @@ public static class DemoUseMachiningProject
 
 		using StreamWriter writer = new StreamWriter("msg.txt");
 		//show message if something abnormal.
-		localProjectService.SessionProgress.CollectionItemAdded += pack =>
+		localProjectService.MixedProgress.CollectionItemAdded += pack =>
 			{
 				if (pack.Tags.Contains(MessageFlag.Warning.ToString()) ||
 					pack.Tags.Contains(MessageFlag.Error.ToString()) ||