Export - Two or more ASPxPivotGridExporters create controls with the same Id

Hello ,
I tried to export many objects via a compositelinks, in my webpage there are many aspxpivotgrids so i need many aspxpivotgridexporters , when i tried the code below with one aspxpivotgridexporter , everything goes well , but when i tried to add another aspxpivotgridexporter on the page (via toolbox, drag and drop and not dynamically) i have the folowing error (see printscreen attached) . That's the system.web.ui that found that the aspxgridexporter have the same id 'state'.This error is caused by the second aspxgridexporter on the page , if i delete it . the error disappears , i've tried to find another case in the knowledge base but without succes . Here after you'll find my code sample . Can you help me to find a solution , because i need it urgently to finished an important project… Thanks for your help.
Jean.
Steps to Reproduce:
two aspxpivotgrids on a same page
two aspxgridexporters on a same page
a fonction for exporting via links and compositelinks
Actual Results:
Multiple objects with same id 'state'
Expected Results:
Private Sub ExportPDF()
        Dim ps As New PrintingSystem()
        With ps
            .PageSettings.PaperKind = System.Drawing.Printing.PaperKind.A3
            .PageSettings.Landscape = True
            .PageMargins.Right = 39
            .PageMargins.Left = 39
        End With
        Dim link1 As New PrintableComponentLink()
        link1.Component = ASPxPivotGridExporter1
        link1.PrintingSystem = ps
        With link1.PrintingSystem
            .PageSettings.PaperKind = System.Drawing.Printing.PaperKind.A3
            .PageSettings.Landscape = True
            .PageMargins.Right = 39
            .PageMargins.Left = 39
            DocSize = .PageSettings.Bounds.Width
            ScaleFact = .PageSettings.UsablePageSize.Width
            .Graph.StringFormat = New BrickStringFormat(StringAlignment.Center, StringAlignment.Center)
            link1.CreateDocument()
            link1.PrintingSystem.Document.AutoFitToPagesWidth = 1
        End With
        Dim linkGridHeader As New Link
        AddHandler linkGridHeader.CreateDetailArea, AddressOf GridHeader
        linkGridHeader.PrintingSystem = ps
        With linkGridHeader.PrintingSystem
            .PageSettings.PaperKind = System.Drawing.Printing.PaperKind.A3
            .PageSettings.Landscape = True
            .PageMargins.Right = 39
            .PageMargins.Left = 39
        End With
        Dim linkGridSimCard As New PrintableComponentLink
        linkGridSimCard.Component = ASPxPivotGridExporter2
        linkGridSimCard.PrintingSystem = ps
        With linkGridSimCard.PrintingSystem
           .PageSettings.PaperKind = System.Drawing.Printing.PaperKind.A3
            .PageSettings.Landscape = True
            .PageMargins.Right = 39
            .PageMargins.Left = 39
        End With
        Dim linkLabelSimCard As New Link()
        AddHandler linkLabelSimCard.CreateDetailArea, AddressOf LabelSimCard
        linkLabelSimCard.PrintingSystem = ps
        With linkLabelSimCard.PrintingSystem
            .PageSettings.PaperKind = System.Drawing.Printing.PaperKind.A3
            .PageSettings.Landscape = True
            .PageMargins.Right = 39
            .PageMargins.Left = 39
        End With
        Dim linkSummaryChart As New Link()
        AddHandler linkLabelSimCard.CreateDetailArea, AddressOf SummaryCharts
        linkSummaryChart.PrintingSystem = ps
        With linkSummaryChart.PrintingSystem
            .PageSettings.PaperKind = System.Drawing.Printing.PaperKind.A3
            .PageSettings.Landscape = True
            .PageMargins.Right = 39
            .PageMargins.Left = 39
        End With
        Dim compositeLink As New CompositeLink()
        compositeLink.Links.AddRange(New Object() {linkGridHeader, link1, linkLabelSimCard, linkSummaryChart}) ', link1, link2
        compositeLink.PrintingSystem = ps
        AddHandler compositeLink.CreateMarginalFooterArea, AddressOf compositeLink_Footer
        AddHandler compositeLink.CreateMarginalHeaderArea, AddressOf compositeLink_Header
        compositeLink.CreateDocument()
        compositeLink.PrintingSystem.Document.AutoFitToPagesWidth = 1
        compositeLink.PrintingSystem.ExportOptions.Pdf.DocumentOptions.Author = "Test"
        With compositeLink.PrintingSystem.PageSettings
            .PrinterName = ""
            .Landscape = True
            .LeftMargin = 39
            .RightMargin = 39
            .PaperKind = System.Drawing.Printing.PaperKind.A3
        End With
        Using stream As New MemoryStream()
            compositeLink.PrintingSystem.ExportToPdf(stream)
            Response.Clear()
            Response.Buffer = False
            Response.AppendHeader("Content-Type", "application/Pdf")
            Response.AppendHeader("Content-Transfer-Encoding", "binary")
            Response.AppendHeader("Content-Disposition", "attachment; filename=SingleReport.Pdf")
            Response.BinaryWrite(stream.GetBuffer())
            Response.End()
        End Using
        ps.Dispose()
    End Sub