Hi, I just made a NetHook which can be helpful for others so i share it. It automatically sets levels visible from 2D chain based milling toolpaths operations selected. After you finished alter what you needed, you can restore your original level settings. You can select any operations in operation manager but it will only show 2D milling chainbased operations.Due to NetHook API limitations:- it can't be used to show 2D HSM toolpaths chains or 3D toolpaths chains (limits).- it will display chain