Well, I can’t help you with AAO obviously 
The basic “Rule” for my Plugin: when you can manipulate a Switch with FSUIPC, you can also manipulate it with my Plugin. (MSFS, P3D, FSX)
And I just made a quick-look in the Controls List Text-File of FSUIPC - it is in your My Documents\FSUIPC7 Folder.
There are several Controls (aka SimConnect Events) for G1000 Softkeys (like G1000_PFD_SOFTKEY1 or G1000_MFD_SOFTKEY6 for example) - are these the ones you are searching for?
Can’t tell you how to use these in AAO. For my Plugin:
Have a look at that Text-File and copy out the (numeric) Event ID for what you need and use it as Action Address in PilotsDeck (with Action Type “Control” of course).