Different tooltip for each bar in chart

Hi all,

I’m currently working on a bar chart that shows both the savings for each individual month and the cumulative savings up to the previous month and for the entire year.

Right now, I have a tooltip that displays the projects for the selected month, their individual savings, their percentage share, and their cumulative percentage in a table.

Now, I want to implement the same for the cumulative values.

The result should be that when a user hovers over the column for the current month, the tooltip shows the projects and data for that specific month — and when they hover over the cumulative column, it shows the respective cumulative project data instead.

So my question is: is this possible? Has anyone an idea ?