With Sheets("Report").ChartObjects.Add(...)
.Chart.Axes(xlCategory).MinimumScale = RoundTo50(Sheets(sheetName).Range("M4"))
.Chart.Axes(xlCategory).MaximumScale = RoundTo50(Sheets(sheetName).Range("M124"))
.Chart.Axes(xlCategory).MajorUnit = RoundTo50((.Chart.Axes(xlCategory).MaximumScale - .Chart.Axes(xlCategory).MinimumScale) / 12)
.Chart.Axes(xlCategory).MinorUnit = .Chart.Axes(xlCategory).MajorUnit / 3
With Charts("Chart1").Axes(xlValue)
.DisplayUnit = xlHundreds
.HasTitle = True
.AxisTitle.Caption = "Rebate Amounts"
End With
REF:
https://stackoverflow.com/questions/10110594/how-to-round-off-x-ticklabels-to-the-nearest-50