Hello there,
Thank you for contacting us!
Unfortunately, it might be quite hard to achieve it with some simple API properties, due to the fact that adding a bar chart would rotate your whole chart (otherwise, you would have x and y axes on top of each other).
I would suggest creating a custom function which will use
Highcharts.SVGRenderer to draw some bars on your chart. You can also try to overwrite the VBPIndicator default functionality, but that would be much harder than simply drawing those bars.
SVG Renderer: https://api.highcharts.com/class-refere ... VGRenderer
If you will encounter any issues while implementing that, please do not hesitate to contact us anytime,
Best regards!