WIA .activeframe not loading

I have a small project to view multi-page tiff files.
Once the document is loaded it populates a combobox with numbers corresponding to the number of pages (i.e. 1,2,3,4), when I select one of those from the combobox it reads that and sets the .activeframe to that number.
However, it always loads the first page instead of which one I choose.
Here is my code for the combobox click event. What am I missing?


Private Sub Combo1_Click()
With ImgTIFF
.ActiveFrame = Combo1.List(Combo1.ListIndex)
Set Image1.Picture = .FileData.Picture
End With
End Sub