Substituting Sinus function with Perlin noise?

2D Perlin noise has an X and Y axis so it's basically a zigzag function.

please explain how to use the Mathf.PerlinNoise instead of Mathf.Sin to set the mesh coordinates abit randomly.

 // Code from procedural examples to sine-ify a mesh
 
 var scale = 10.0;
 var speed = 1.0;
 private var baseHeight : Vector3[];
 
 function Update () {
     var mesh : Mesh = GetComponent(MeshFilter).mesh;
     
     if (baseHeight == null)
         baseHeight = mesh.vertices;
     
     var vertices = new Vector3[baseHeight.Length];
     for (var i=0;i<vertices.Length;i++)
     {
         var vertex = baseHeight[i];
         vertex.y += Mathf.Sin(baseHeight[i].x ) * scale;   //<<<---THIS LINE PLEASE :)
         vertices[i] = vertex;
     }
     mesh.vertices = vertices;
     mesh.RecalculateNormals();
 }

EDIT-okay so here is a three-dimensional Perlin mashed deformation script, there are other noise functions on the forums that may have more control of the noise.

 var scale = 0.40;
 var speed = 1.0;
 private var baseHeight : Vector3[];
 
 function Update () {
     var mesh : Mesh = GetComponent(MeshFilter).mesh;
     
     if (baseHeight == null)
         baseHeight = mesh.vertices;
     
     var vertices = new Vector3[baseHeight.Length];
     for (var i=0;i<vertices.Length;i++)
     {
         var vertex = baseHeight[i];
         vertex.y += Mathf.PerlinNoise(baseHeight[i].x*3+77,12) * scale;
         vertex.x += Mathf.PerlinNoise(baseHeight[i].z*2+77,22) * scale;
         vertex.z += Mathf.PerlinNoise(baseHeight[i].y*3+77,42) * scale;
         vertices[i] = vertex;
     }
     mesh.vertices = vertices;
     mesh.RecalculateNormals();
 }