And again, your question is too general. What do you mean saying "reduce the opacity of my charts"? You mean opacity your series only? Or the whole chart?
Thanks for awnser my question.
What I need is reduce the opacity of the series of my chart. I'm using the template of area charts, and i have a lot of data series that one overlaps the others. I wanted reduce opacity of all series, because doing this all my data series will be more visible
Thanks for attention
You can set the opacity for all series in Customize -> Advanced -> PlotOptions -> Area -> Fill Opacity
Or you can set the opacity of specific series in Customize -> Advanced -> Series -> Series[n] -> Fill Opacity