Request for desired speed from GCS

Is there a way to request the desired speed from the flight controller after the DO_CHANGE_SPEED changes the guided wp speed.

I am migrating from Copter-3.6.6 to Copter-4.2 and in Copter-3.6.6 I used to request for the WPNAV_SPEED parameter value for the desired speed. But Copter-4.2 is no more updating it when changed from DO_CHANGE_SPEED.