drillUpText property
dynamic
drillUpText
getter/setter pair
Drill up button is deprecated since Highcharts v9.3.2. Use drilldown.breadcrumbs instead.
The text for the button that appears when drilling down, linking back
to the parent series. The parent series' name is inserted for
{series.name}.
API Docs: https://api.highcharts.com/highcharts/lang.drillUpText
Implementation
dynamic drillUpText;