It will be best if you create a new question instead of following the previous one. The new one will be at the top of the list, the trace continuation won't:
Wz(MARKER_10187,MARKER_10188) measures the velocity of MARKER_10187 relative to MARKER_10188 around the global Z-axis. Are you sure that you don't want to use
Also, make sure you are not using the Bistop to create the revolute joint itself. You have to create the revolute joint separately. The Bistop function will only apply forces to control the rotational movement.