Yes, Series1.RecalcStats did the trick!
Thank You!

Hello,

Sure.
I have attached a simple project.

Best Regards:
MicroSolutions

Hello, Thx for the answer, but unfortunately it does not seems to work. What is very interesting, if I call Chart.Draw in a separate function, it works. If I call Chart.Draw directly after adding the values, it does not work. Any Idea? Can You reproduce the issue on Your side? Regards: MicroSolutions

Hello, If I add some values for a BoxPlot series , where the minimum is grater than 0, the BoxPlot is not painted correctly for the first time. If I move around with the mouse, the scale and painting is fixed. (then the Chart repaints itself) e.g: for I:=0 to 30 do begin self.Series1.Add(I+100); end...