Access to Excel 2007 curious behavior

[artificiality]

I have written an application that worked fine with Excel 2003.
I have upgraded to Excel 2007 and some problems occur when translating
Access tables into Excel charts.

Here is the sample of code of that worked fine with Excel 2003 :

Dim Excel As Excel.Application

Set Excel = New Excel.Application


Excel.Workbooks.Add


Dim worksheet As Excel.worksheet

Dim r As Recordset
I = 1

Screen.MousePointer = 11

Excel.Sheets(1).Select

With Excel.ActiveSheet

'Columnheaders
.Range("A" & I).Value = "profileNumber"
.Range("B" & I).Value = "templateNumber"
.Range("C" & I).Value = "typeNumber"
.Range("D" & I).Value = "dates"


I = I + 1


On Error Resume Next

Set r = G_DBManager.GetModelElementsCount

Dim count As Long


r.MoveFirst

Do Until r.EOF
.Range("A" & I).Value = r("profileNumber")
.Range("B" & I).Value = r("templateNumber")
.Range("C" & I).Value = r("typeNumber")
.Range("D" & I).Value = r("dates")


I = I + 1
r.MoveNext
Loop
' End If
count = r.RecordCount + 1
r.Close
.Range("D").NumberFormat = "m/d/yy"
Excel.Visible = True



End With


Excel.Charts.Add


With Excel.ActiveChart

.ChartType = xlLineMarkers
.HasAxis(xlCategory, xlPrimary) = True
.HasAxis(xlValue, xlPrimary) = True
.Axes(xlCategory).AxisBetweenCategories = True
.Axes(xlCategory, xlPrimary).CategoryType = xlCategoryScale
.Axes(xlCategory, xlPrimary).HasTitle = True
.Axes(xlCategory, xlPrimary).AxisTitle.Characters.Text = "date"
.Axes(xlValue, xlPrimary).HasTitle = True
.Axes(xlValue, xlPrimary).AxisTitle.Characters.Text = _
"Count of Model Elements"
.HasTitle = True
.ChartTitle.Characters.Text = "Count of Model Elements"

.SetSourceData Source:=Excel.ActiveSheet.Range("A1:C" & count), PlotBy:= _
xlColumns
.SeriesCollection(1).Values = "=Sheet1!R2C1:R" & count & "C1"
.SeriesCollection(1).name = "=Sheet1!R1C1"
.SeriesCollection(2).Values = "=Sheet1!R2C2:R" & count & "C2"
.SeriesCollection(2).name = "=Sheet1!R1C2"
.SeriesCollection(3).Values = "=Sheet1!R2C3:R" & count & "C3"
.SeriesCollection(3).name = "=Sheet1!R1C3"
.SeriesCollection(1).XValues = "=Sheet1!R2C4:R" & count & "C4"
.Location Where:=xlLocationAsObject, name:="Sheet1"


The chart is a Line type. The first 3 columns are the 3 parameters.( Y axis value) .The 4th column is the date column ( X axis).

The problem is that the chart put the 4th column(dates) as a Y axis value in Excel 2007.This is curious , especially since no problem was found for Excel 2003.