Problem with adding driver

I have struggled a lot of a question that can I add a driver to a physics strength properties?


and what exactly I have to do to add the driver to a bone with controlling the strength value.

If you have any solution, please comment below and let me know how to do it to let it controllable by a bone!

Properties editor can be pinned and have two to add a driver to one place and point the target from the other. That way it’s possible to have the armature in pose mode and have bone locations visible. Or you could add the driver variable manually from the graph editor.