Raycasting not working on a procedural mesh with a mesh collider.

I wrote some code that creates a procedural mesh made out of smaller cubes, its basically the same as the code on this video only it supports 3 dimensions (X,Y,Z):

https://www.youtube.com/watch?v=bFKgiPomYpM

The problem is that it does not detect the mesh collider when ever a ray is cast at it, it just goes trough as if nothing was there.

Here is the code used for the collision detection:

  private void Update(){
         UpdateVoxelMesh(data);
         UpdateMesh();
 
         //Rayrace to get the click position
 
         if (Input.GetMouseButtonDown(0)){
             Vector3 clickPosition = -Vector3.one;
 
             Plane plane = new Plane(Vector3.up,0f);
             Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
             float distanceToPlane;
 
             if (plane.Raycast (ray, out distanceToPlane)){
                 clickPosition = ray.GetPoint (distanceToPlane);
             }
 
             print(clickPosition);
         }
 

Some Images: