Cannot programmatically control yaw damper system switches

[TheAlphadog]

I'm working on a XPPython3-based python interface script to control the CL650 aircraft model's Yaw Damper system switches on the pedestal.  These datarefs published by the aircraft model are not writeable, so a 0 or 1 value written to the dataref does nothing.

• pedestal/yd/disc
• pedestal/yd/yd_1
• pedestal/yd/yd_2
• CL650/pedestal/yd/disc
• CL650/pedestal/yd/yd_1
• CL650/pedestal/yd/yd_2

Likewise, the native X-Plane writeable datarefs have no effect on the model-specific simulation of the yaw damper:

• sim/cockpit/switches/yaw_damper_on
• sim/cockpit2/switches/yaw_damper_on

The following commands (not datarefs) also have no effect on this aircraft model's yaw damper system:

• sim/systems/yaw_damper_toggle
• sim/systems/yaw_damper_off
• sim/systems/yaw_damper_on

 

Using the DataRefTool, and monitoring for commands (not datarefs) that may be activated while pressing the buttons in the CL650 cockpit reveals no results.  So, which writeable datarefs or commands allow me to programmatically control these switch states?  I am able to manipulate other cockpit switches and prove that they work so it is the yaw damper system that I'm having trouble with.

 

Thank you!