zIndex property

double? zIndex
getter/setter pair

The z index of the data labels group. Does not apply below series level options.

Use a zIndex of 6 to display it above the series, or use a zIndex of 2 to display it behind the series.

API Docs: https://api.highcharts.com/highcharts/series.boxplot.dataLabels.zIndex

Implementation

double? zIndex;