Mapping ShoulderExtra Joints in Mobu via Python


I’m trying to map ShoulderExtra joints to an FBCharacter by getting the Character’s ‘LeftShoulderExtraLink’ and ‘RightShoulderExtraLink’ properties. However, these properties don’t seem to exist, so the only way I can map my joints to these slots is through the GUI which isn’t ideal. Does anyone know a way around this?

One alternative idea I had was to find a function to import an xml mapping file onto the FBCharacter, but I didn’t find anything exposed in pyfbsdk to do so. I’m in MotionBuilder 2018 for reference.

Thank you