Bed Visualizer problems

I cannot get the bed visualizer to show a graph. It runs the commands but does not pull in the mesh data. No data is shown in stored data. I have tried numerous G codes. I am on an Ender 3 with an SKR mini E3 board using KAY3D firmware.

I don't know anything about this firmware, so not sure if it will report the mesh data in a way that can be graphed by my plugin.