Flow Simulation Graph that shows shear stress on a surface vs distance away from the source

I'm working with flow simulation and I'm trying to get a graph that shows shear stress on the bottom surface vs the distance the fluid is flowing. I need something that displays the shear stress at various points along the bottom of the flow chamber I'm modelling.

I'm thinking I need to make an XY plot but when I try to do that it gives me an error saying it cannot compute any parameters. I've attached an image of my attempt. Any ideas?

SolidworksFlow Simulation