[SOLVED] Querystring form load not working

I am using the following code

if Application.QueryString(0) = “WoodgrainOverlayBoards” then

Dim window As New frmWoodGrainOverlayBoards
window.LoadData()
window.WindowState = FormWindowState.Maximized
window.Show()

elseif Application.QueryString(0) = “PaintJobs” then

Dim window As New frmPaintJobs
window.LoadData()
window.WindowState = FormWindowState.Maximized
window.Show()

end if

However , if I go into the app using the first querystring ( https://example.example.com/PaintSourcing/?PaintJobs) and then try to load the the second querystring (https://example.example.com/PaintSourcing/?WoodgrainOverlayBoards), the second tab brings up the form from the first tab.

I am told by the user that this just started happening today.  It had been pulling up correctly for over a year.

How do I ensure that

https://example.example.com/PaintSourcing/?PaintJobs  – brings up frmPaintJobs

and

https://example.example.com/PaintSourcing/?WoodgrainOverlayBoards – brings up frmWoodGrainOverlayBoards