Manipulate vertex of skinned mesh?

Unity Engine
1

Hi, i need simply to manipulate vertex of a skinned mesh, but if i use the sharedMesh.vertices, when i stop the game in the editor, the mesh does not return to its original… what i need to do?

2

Is it possible to alter .mesh, instead of .sharedMesh? Or failing that, perhaps you could make a copy of sharedMesh and assign that to the instance.