You can make your selected shape the high in pixel that you want but only if is not a Path becouse the Path value collect itself as a object shape. May be you can get the high value of the shape layer with sourceRectAtTime().higth and then try to add or subtract the number of pixel left to get to 95px or the number of pixel you want in the Scale property in the Transform group. Remember that the Scale property store it's value in percentage so you have to set it's value by right click in the scale property + Edit Value..., change the unit in pixel an then add the number of pixel in the Y value.
In the others shape layers like rectangles and ellipses you have the Size property and you can change there the num of pixels you want in high if you want. But you can't do that with the Polystars becouse there's no size property there... so you have to do this like you did with the path.