How To create Mark Labels in Bar Chart?

Hello everyone ,
I am relatively new to node-red , I wanted to know How to give Mark labels in Bar Chart , basically i wanted to display the value(level at y-axis) above for each bars in the bar chart . Please help!!

Regards
Aalhad

You can't. The angular-chartjs library we use doesn't make it easy to do, so it's not something we are going to add in the short term. Happy to consider code pull requests though.