Is the Reactor Ramp command functional?

Plugins & Plugin Development Reactor
1

When I invoke the StartRampToLevel device action, newLoadLevelTarget = 60 and newRampTime = 1800, I get error message “400 Bad Request undefined.” I don’t know how to get the Ramp action to work.

2

That means it’s not supported/implemented by the device.

3

Is it supprted by the ezlo hub?