Crystal Reports XI Viewer, size to percent or screen ?

Hello, I have a vb .net 2003 application using CR XI viewer to display reports.  when the user increases the magnification, I increase the viewer width with the code below.  

I can only get it to work with the units in pixels: Me.crViewer1.Width = System.Web.UI.WebControls.Unit.Pixel(800)
This will not work: Me.crViewer1.Width = System.Web.UI.WebControls.Unit.Percentage(100)

If I use the percentage it sizes to 100 pixels instead of 100%.  Ive tried .Percentage(100) and .Percentage(100%)

Here's the code:  Every thing works but the case else.

    Private Sub crViewer1_ViewZoom(ByVal source As Object, ByVal e As CrystalDecisions.Web.ZoomEventArgs) Handles crViewer1.ViewZoom

        Me.crViewer1.BestFitPage = False

        Select Case e.NewZoomFactor

            Case 100
                Me.crViewer1.BestFitPage = True

            Case 125
                Me.crViewer1.Width = System.Web.UI.WebControls.Unit.Pixel(1100)
                Me.crViewer1.Height = System.Web.UI.WebControls.Unit.Pixel(1100)

            Case 150
                Me.crViewer1.Width = System.Web.UI.WebControls.Unit.Pixel(1400)
                Me.crViewer1.Height = System.Web.UI.WebControls.Unit.Pixel(1400)

            Case Else
                Me.crViewer1.Width = System.Web.UI.WebControls.Unit.Percentage(100)
                Me.crViewer1.Height = System.Web.UI.WebControls.Unit.Percentage(100)

        End Select

    End Sub

this is the link that I used:
http://technicalsupport.businessobjects.com/KanisaSupportSite/search.do?cmd=displayKC&docType=kc&externalId=c2016117&sliceId=&dialogID=10458781&stateId=1%200%2010460751

Thanks for any help.