Unity Photon Networking - Cant understand OnPhotonSerializeView

Question

In all tutorials I see that an object sends data over the network and receives the data.

For sync in the same method:

Code:

void OnPhotonSerializeView(PhotonStream stream, PhotonMessageInfo info){
        if (stream.isWriting) {
            stream.SendNext (transform.position);
            stream.SendNext (transform.rotation);
        } else {

            Debug.Log("never gets called ");

            //never gets called...

            transform.position = (Vector3)stream.ReceiveNext ();
            transform.rotation = (Quaternion)stream.ReceiveNext ();

        }
    }

But when I test my code, the lower part, where the data gets received, is never executed!

I never see the logs. But the object is SYNCHED because it is set in the inspector:

But the problem is that the object is not interpolated so it looks kind of funny.

So, I need to know how can I make the upper method to work so I can do some interpolation stuff.