This allows accessing it from drivers and using it in UI, as demonstrated by adding it to the transform panel of 3D View. As an aside, properly mark transform-related properties of Bone read-only, as they can only be changed correctly in edit mode.
This allows accessing it from drivers and using it in UI, as demonstrated by adding it to the transform panel of 3D View. As an aside, properly mark transform-related properties of Bone read-only, as they can only be changed correctly in edit mode.