Access CONTROL_SYSTEM_STATE Message

I’m currently working on a new display for the QGC environment and would like to know how to access the body frame velocity messages in the CONTROL_SYSTEM_STATE topic. On loading QGC, I don’t see this topic listed under the “Analyze Tools” section of QGC and am wondering if these messages can be implemented or if they are currently not being used for any flight tasks. I’ve attempted to access these messages in a gazebo and jmavsim simulator so perhaps I need some real hardware to access them? Any insight would be greatly appreciated.

Best,

Jonathan Erikson