Code runs only if a specific page of the MultiPage is selected

How do I do this right?

I am on a UserForm codepage in VBE.
I want my code run on the event of a certain page of the MultiPage1 is selected, the one that has the Tag property set to "Pic"

Current solution:

Private Sub MultiPage1_Change() 
If MultiPage1.Value = 7 Then
Run MySub
End If
End Sub

Works, but I would like to improve it so when I move the page backward or forward I do not need to remember to adjust the value property in the above code.

So the desire would be this:

Private Sub MultiPage1_Change() 
If MultiPage1.justselectedpage.Tag = "Pic" Then
Run MySub
End If
End Sub

(Of course .justselectedpage or .justactivatedpage does not exist.)

Is it possible?