legend when two values in the bar chart

Pikachu-Power , The information you have provided is not making the problem clear to me. Can you please explain with an example.

In case you need a Measure slicer to refer.

https://radacad.com/change-the-column-or-measure-value-in-a-power-bi-visual-by-selection-of-the-slicer-parameter-table-pattern
https://community.powerbi.com/t5/Desktop/Slicer-MTD-QTD-YTD-to-filter-dates-using-the-slicer/td-p/500115


Appreciate your Kudos.

Pikachu-Power  See if these threads can help.

https://community.powerbi.com/t5/Desktop/Multiple-values-in-line-chart-with-legend/m-p/1357551

https://community.powerbi.com/t5/Desktop/Stagged-Bar-Chart-with-multiple-values/m-p/1392877

https://radacad.com/dax-measure-in-the-axis-of-the-power-bi-report

From your measure above, it seems you have used a dynamic measure, so do you want to show two measures listed in the switch function at the same time or show two measures that have a switch function at the same time? It seems to have a lot of info in a chart. I cannot show two measures at the same time with a legend in a bar chart. When using a dynamic measure, it shows only one measure every time switching a selection.

Additionally, I found a visual called Multiple Axes Chart from Power BI Visuals AppSource that can have multiple values with a legend. You may check if it can realize what you want. It will display like below.

Click … in visualization panel to get more visuals.