Link on graph, when using more than 1 "Group By"


We are using a graph, which uses “Group By” on 2 fields and count total on results.
What we want is to be able to select a data-point in the graph (using Data Link), and have that open a URL with value of 1 of the Grouped fields.

At the moment, when (for example) we use “${}”, it brings both fields as value.

Is this possible?
If yes, would appreciate details how to do that…

Let me know if you need additional info to be able to assist…