diff --git a/Machining/DemoRenderingMachiningProcessAndStripPosSelection.cs b/Machining/DemoRenderingMachiningProcessAndStripPosSelection.cs
index 6a0d96a..28891c2 100644
--- a/Machining/DemoRenderingMachiningProcessAndStripPosSelection.cs
+++ b/Machining/DemoRenderingMachiningProcessAndStripPosSelection.cs
@@ -4,9 +4,9 @@ using Hi.MongoUtils;
 using Hi.Licenses;
 using Hi.MachiningProcs;
 using Hi.Common.FileLines;
-using Hi.MillingSteps;
 using System.Windows;
 using Hi.Disp;
+using Hi.MachiningSteps;
 
 namespace Sample.Machining
 {
@@ -38,7 +38,7 @@ namespace Sample.Machining
             Console.WriteLine($"Load Project: {projectPath}");
             MachiningProject machiningProject = MachiningProject.LoadFile(projectPath);
 
-            machiningProject.ShellApi.MillingStepSelected += (MachiningStep step) =>
+            machiningProject.ShellApi.MachiningStepSelected += (MachiningStep step) =>
             {
                 var sourceCommand = step.SourceCommand;
                 Console.WriteLine($"Step Selected: MRR = {step.Mrr_mm3ds} At \"{sourceCommand?.FilePath}\" (Line {sourceCommand?.GetLineNo()}) \"{sourceCommand?.Line}\"");