Using Companion to trigger CL/QL user define keys?

I am looking to have Qlab 5 trigger a companion macro that can press a user define key. Is there a way that this is done, because I do not see UDK’s in the dropdown menu in the companion GUI.

UDK’s are not “pressable” remotely, as Yamaha for whatever reason never enabled that functionality.
If the functions that the UDK perform are available within the RCP or MIDI modules then creating a button in Companion with those same functions is the way to do this currently.