Display payload set through ur_msgs/SetPayload

I’m looking for a way to visualise the current payload and COG values when the robot is in External Control.

Currently I set the robot to external control and update the payload through ur_msgs/SetPayload. The messages are making it through as I can see the COG point moving in the visualisation.

Is there a way to visualise the current payload value whilst running the external control step of a program?

There are variables visible on the Run tab. Can I add the payload to those in some way?