Here is the script...

var newVertices : Vector3[]; var newTriangles : int[];

function Update () { var mesh : Mesh = GetComponent(MeshFilter).mesh;

mesh.Clear();
// Do some calculations...
mesh.vertices = newVertices;
mesh.triangles = newTriangles;

}

I then make 4 vertices and 4 faces as a pyramid, but I can only see a single triangle.

Any help is very much appreciated.

Also, I already read the Unity Scripting Reference, and I didn't see this mentioned.