gistfile1.txt

//Not push first OnNext same ReactiveProperty<T>
    //Debug.Log("HAHAHA : " + _); not run until Method ChangeCurrent() Call
    private SubjectProperty<int> _current = new SubjectProperty<int>();
    private IDisposable _disposable;

    public void Start()
    {
        _disposable = _current.Subscribe(_ =>
        {
            if (_current.Value > 10)
            {
                _disposable.Dispose();
            }

            Debug.Log("HAHAHA : " + _);
            _current.Value++;
        });
    }

    [NaughtyAttributes.Button()]
    public void ChangeCurrent()
    {
        _current.Value++;
    }