Fix an error in MODULE to run Sub Workbook_SheetDeactivate(ByVal Sh As Object)

Dear all,
I have below code in a module to do some multiple checks..I want these checks to be done before any sheet gets de-activated in general (I am excluding 2 sheets as mentioned in code).

When i keyin this code under Sub Workbook_SheetDeactivate(ByVal Sh As Object), it throws up an ERROR message.
Could anyone please help whats the mistake i'm doing there? or any other best alternative to meet my requirement..?

PS: When keying-in this code under Sub Workbook_SheetDeactivate(ByVal Sh As Object), i wont declare "Dim Sh As Worksheet" as its not required.

Sub textforimage()

Dim Sh As Worksheet
Set Sh = ActiveSheet
    
If Sh.Name <> "Macro" And Sh.Name <> "Revision History" Then
         If Sh.Pictures.Count = 0 Then
                Exit Sub
        
          Else
          Sh.Pictures.Select
             If Selection.Name = "New name" Then
                Exit Sub
             
          
                    Else
                      Application.EnableEvents = False
                      Sh.Activate
                      Application.EnableEvents = True
                      MsgBox "This Sheet carries manually copied IMAGE file..So all check points will be RESET on: " & Sh.Name, vbExclamation, "Copied IMAGE found"
                      Sh.Pictures.Select
                      Selection.Name = "New name"
              End If
              
          End If
  Else
End If
End Sub

Thanks for your help in advance.

Nope..I have sheet which contains "New name" as picture name...But when is switch to some other sheet, it must not throw any message as per the code, but it does so...

I have attached the file...Please test it by switching to someother sheet...Sheet2 carries the image file.

Thanks a lot....That works fine.. But i wonder whats the mistake...Your code appears almost same as mine....

I got it...May be "Sh.activate" event i was trying to run before the message box...Not sure, but i guess so... Thanks for your help... Good day.