ASP.net Crystal Report Subreport in PDF not using Selection Formula

I am exporting a Report to PDF the selection criteria works in the sub report with crystal report viewer included with .net. However when I export to PDF the selection criteria only seems to apply to the main report and not any subreports. How do I set the selection criteria for the subreport before exporting to the pdf?

here is the code

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim crReportDocument As ReportDocument
        Dim crExportOptions As ExportOptions
        Dim crDiskFileDestinationOptions As New DiskFileDestinationOptions
        Dim Fname As String

        crReportDocument = New RFMSQuote
        crReportDocument.DataDefinition.RecordSelectionFormula = "{QuoteKitchen.QuoteID}=" & Int(Request.QueryString("ID"))


        Fname = Server.MapPath("Exports\" & Session.SessionID.ToString & ".pdf")
        crDiskFileDestinationOptions = New DiskFileDestinationOptions
        crDiskFileDestinationOptions.DiskFileName = Fname
        crExportOptions = crReportDocument.ExportOptions
        With crExportOptions
            .DestinationOptions = crDiskFileDestinationOptions
            .ExportDestinationType = ExportDestinationType.DiskFile
            .ExportFormatType = ExportFormatType.PortableDocFormat
        End With
        crReportDocument.Export()
        Response.ClearContent()
        Response.ClearHeaders()
        Response.ContentType = "application/pdf"
        Response.WriteFile(Fname)
        Response.Flush()
        Response.Close()
        System.IO.File.Delete(Fname)


    End Sub