I am coding a Web app in vb.net 2005.  I have an ultraWebGrid and ultraWebCalcManager on a aspx page.  The grid displays several rows and columns of data correctly.  However, the calcManager does not seem to work.  When the program reaches the line with sum([Column Name]) I receive the error message that the name 'Sum' is not declared.  Here are portions of the code from the code behind:

Imports Infragistics.WebUI.UltraWebGrid
Imports Infragistics.WebUI.UltraWebCalcManager

........

.    Private Sub dgPermMkdnDtl_InitializeLayout(ByVal sender As Object, ByVal e As Infragistics.WebUI.UltraWebGrid.LayoutEventArgs) Handles dgPermMkdnDtl.InitializeLayout

        Dim calcManager As Infragistics.WebUI.UltraWebCalcManager.UltraWebCalcManager
        calcManager = New Infragistics.WebUI.UltraWebCalcManager.UltraWebCalcManager()
        e.Layout.Grid.CalcManager = calcManager

........

        Dim colorsBand As New UltraGridBand
        Dim detailsBand As New UltraGridBand

........

        dgPermMkdnDtl.Bands.Add(colorsBand)
        dgPermMkdnDtl.Bands.Add(detailsBand)

        detailsBand.Columns.Add("MarkdownNo", "MarkdownNo")

........

        detailsBand.Columns.FromKey("MarkdownNo").Footer.Total = SummaryInfo.Formula
        detailsBand.Columns.FromKey("MarkdownNo").Footer.Formula = "SUM([MarkdownNo])"

........

Do you have any examples to share or any suggestion?
Thanks.
Glenn