How to make object scale at specific point on Z axis based on bone? So, I'm working on a rig and I hope to get a mouth rig working.  Behind the mouth is a plane which I've textured red to act as the inside of the character's mouth.  Problem is, that while it might be possible to move the red plane witha bone, I haven't figured out how to scale it.  The jaw will deform and as a result, some of the red texturing will not be able to deform with the jaw and make it appear seamless.
Scaling the bone should scale the mesh as well. It is really easy to try it out:


Add a plane
Add an armature
Parent the plane to the armature (automatic weights)
Scale the bone


Move the mesh origin point in order to change the scaling origin.