System.Type question

I have been struggling now with this for several hours and for the life of me I cannot figure out how to translate the following C# code to OpenEdge GUI for .NET:

        private void ultraDayView1_MouseEnterElement(object sender, Infragistics.Win.UIElementEventArgs e)
        {
            appUIElement = e.Element.GetAncestor(typeof(AppointmentUIElement)) as AppointmentUIElement;

This is not working:

oAppointmentUIElement = e:Element:GetAncestor(Progress.Util.TypeHelper:GetType("Infragistics.Win.UltraWinSchedule.DayView.AppointmentUIElement")).

  METHOD PRIVATE VOID ultraDayView_MouseEnterElement( INPUT sender AS System.Object, INPUT e AS Infragistics.Win.UIElementEventArgs ):
    
    DEF VAR appUIElement AS AppointmentUIElement.
    
    appUIElement = e:Element:GetAncestor(Progress.Util.TypeHelper:GetType("Infragistics.Win.UltraWinSchedule.DayView.AppointmentUIElement")).

What am I missing?

Thanks,

-peter