@toadstorm fuck yesss that worked! was able to see the definition of the functions in there, found the inputindex call
for anyone curious, inputindex was the param i was looking for. the code for the action button: “` from kinefx.ui import rigtreeutils rigtreeutils.selectPointGroupParm(kwargs, inputindex=1) “` and the menu script: “` from kinefx.ui.jointselection import buildTransformMenu return buildTransformMenu(kwargs[‘node’], inputindex=1, is_motionclip=False) “`
gives you joint selection for the second input of your hda