Add range (low-high values) "Name" to chart legend from Data Table

  • In Libre Writer, Insert > Object > Chart.
  • Then right-click > Chart Type.
  • Select “Stock” and click “Stock Chart 3” (blue bars).
  • Then right-click > Data Table.
  • Type “Low-High Range” in text box above “Low Values … High Values” and click “OK”
  • This text does not appear in Chart Legend

How can I add custom text to the legend (text placed next to orange legend line) to explain orange data lines in chart?