Showing a calculated value in the geometry nodes modifier stack

Show a calculated value in the geometry nodes modifier stack.

Example:

A user inputs a value then geometry nodes does some calculations then shows the calculated value in the geometry nodes modifier stack. I tried sending it to the output group but it doesn't show.

I was thinking of maybe using something like #input_value + #given_value (like using a #frame driver) but not sure how to get this to show in the geometry nodes modifier stack or access the calculated node value to output.

The red arrow is where I would like the calculated value to show up.

blender.stackexchange.com/questions/256279/showing-a-calculated-value-in-the-geometry-nodes-modifier-stack