Transform all interactivecloth vertices manually

My question is: How to transform all interactive cloth vertices manually?

The Interactive Cloth Docs(Bottom) says it should be possible, but not HOW to do it.

Test 1 - change the vertices directly

   InteractiveCloth cloth = GetComponent(typeof(InteractiveCloth)) as InteractiveCloth;
         for (var i = 0; i < cloth.vertices.Length; i++)
             cloth.vertices[i] += Vector3.up;

Nothing seems to happen...

Test 2 - Set the vertices

    InteractiveCloth cloth = GetComponent(typeof(InteractiveCloth)) as InteractiveCloth;
         Vector3[] newVertices = cloth.vertices;
         for (var i = 0; i < newVertices.Length; i++)
             newVertices[i] += Vector3.up;
         cloth.vertices = newVertices; // <--- Error: Property or indexer 'UnityEngine.Cloth.vertices'  cannot be assigned to -- it is read only

It seems I cannot do it because Cloth.vertices is read only.

Help.

Edit:

To clarify my question a bit more: The docs for interactive cloth says: "Cloth is being simulated in world space and does not get any changes you make in transform. In case you really want to move the cloth directly without applying any forces you are free to transform all cloth vertices manually."

But it doesn't explain how to "transform all cloth vertices manually".