Scale анимация для WPF окна

Попробовал этот код:

Storyboard storyboard = new Storyboard();
ScaleTransform scale = new ScaleTransform(1.5, 1.5);
RenderTransformOrigin = new Point(0.5, 0.5);
RenderTransform = scale; // Недопустимое преобразование для Window
DoubleAnimation growAnimation = new DoubleAnimation();
growAnimation.Duration = TimeSpan.FromMilliseconds(300);
growAnimation.From = 1;
growAnimation.To = 1.8;
storyboard.Children.Add(growAnimation);
Storyboard.SetTargetProperty(growAnimation, new PropertyPath("RenderTransform.ScaleX"));
Storyboard.SetTarget(growAnimation, this);