Unity simple object position/rotation recorder

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

// this script will record the position and rotation of the
// GameObject it is placed on, and when disabled (OnDisable()),
// it will write it to a CSV file of your choosing.
// @kurtdekker

public class RollABallRecorder : MonoBehaviour
{
    public string Filename;

    void Reset()
    {
        Filename = System.String.Format( "Position_Rotation_" + name + ".csv");
    }

    List<string> dataBuffer;

    int frameno;

    void Update ()
    {
        if (dataBuffer == null)
        {
            dataBuffer = new List<string>();
        }

        // grab
        var pos = transform.position;
        var rot = transform.rotation;

        // format the line
        string data = frameno.ToString() + ",";

        data += System.String.Format( "{0},{1},{2},", pos.x, pos.y, pos.z);

        // WARNING: These are NOT eulerAngles; these are the actual internal
        // quaternion values so you can reconstruct the rotation. You can also
        // store the rotation eulerAngles but they are subject to gimbal lock.
        data += System.String.Format( "{0},{1},{2},{3}", rot.x, rot.y, rot.z, rot.w);

        // store
        dataBuffer.Add( data);

        // next!
        frameno++;
    }

    // beware of when this is called. It may suit your needs to be much
    // more explicit in order to avoid overwriting the previous run's data.
    // Here is some timing diagram help:
    // https://docs.unity3d.com/Manual/ExecutionOrder.html

    void OnDisable()
    {
        if (dataBuffer != null)
        {
            System.IO.File.WriteAllLines( Filename, dataBuffer.ToArray());
            dataBuffer = null;
        }
    }
}