Well thanks for answering back ... but I already tired that and it doesn't work. It simply does nothing! I can put any value in it and the chart always start at 0. Also I try in VB to force the automatic scale with ".MinimumScaleIsAuto = True" but that also doesn't seem to work.
Anyway, I have a minimum value that change often, so I can't put a fix value.
once again, thanks for helping
Regards