How can I get Unity to understand animated UV coordinates?

I’m working on a 2d project.When I created a walk cycle and animated the UV coordinates inside Max,( to swap out the head expression ) it renders out fine. When I export the animation as a FBX into Unity the only the walk cycle shows up and not the portion where I animated the UV’s. Is there script for this? Can someone tell me what I’m doing incorrectly?

Thank you

Unity does not import animated UV coordinates. You need some script for that.