Importing mesh components animations from Maya to Unity.

Hello,

I have some problems importing animations that involve translating or scaling a vertex, face, components in general of a mesh in general from Maya to Unity. If it's not quite clear, in Maya I can keyframe the parameters of certain faces of the mesh. The animation looks fine in Maya, but then when importing it to Unity, it does not animate at all. I've already tried exporting it with FBX as well, without positive results.

Could anyone tell me if there is a way to do that in Unity, or at the moment its not supported yet?