Active document change notification

Hi all, I'm trying to write a macro to create a file log that records every change of active document.

I would like to write to a file a list of date / time / filename of the active document (part/assembly/drawing).

Therefore the macro should trigger a function that write to a file every time the active document chages.

Following the suggestions I found on the following link

https://www.lynkoa.com/sites/default/files/questions/answer/21/04/2017/using_notifications_events_in_solidworks_macros.p…

I created the following macro:

Main Module:

     Sub main()

         Dim MyClass As New Notification_Class

         MyClass.MonitorSolidWorks

     End Sub

Class Module: (Notification_Class)

     Option Explicit

     Dim WithEvents swApp As SldWorks.SldWorks

     Dim MyModel As SldWorks.ModelDoc2

-------------------------

     Public Sub MonitorSolidWorks()

         Set swApp = Application.SldWorks

     End Sub

--------------------------

     Private Function swApp_ActiveDocChangeNotify() As Long

         Dim Time As Date

         Dim FileName As String

         ' Get active document

         Set MyModel = swApp.ActiveDoc

         ' Open output file for writing document change log file

         Open "c:\temp\swActiveDocLog.txt" For Output As #1

         FileName = MyModel.GetPathName

         Time = DateTime.Date & DateTime.Time

         '  Write to output file

         Write #1, Time & "Active doc: " & FileName

         ' Close the output file

         Close #1

     End Function

I get no results. It seems the function will not run when the active document changes.

What's wrong?

Thanks in advance for your help.

SolidworksApi/macros