Highlight highest/lowest value on a pivot chart

[already999]

Hello,
I know how to show this in a range of data using helping columns for min/max value and using overlapping chart options.
But is it also possible to highlight the highest/lowest value in a pivot chart without adding columns in the original data table. I want to have a clear overview in that data without those helping columns. So is it possible to add helping columns to show the min/max value in the pivot table?

Thanks in advance for any suggestion.

Kr Al