How can I access/change the saturation of my scene with C#? (had it working, but it stopped after update)

Hi,

I was using this line of code to access the saturation in my scene (having the ColourCorrectionCurves script attached to my camera, and "using UnityStandardAssets.ImageEffects;" ):

 var sat = Camera.main.gameObject.GetComponent<ColorCorrectionCurves>().saturation;

It worked no problem, but since updating to the current version of Unity it no longer does anything. No error messages appear either. I've also tried using:

     UnityStandardAssets.ImageEffects.ColorCorrectionCurves. ...

but the intellisense stops working there, and it won't find the Saturation property.

Does anyone know how to access it now?

Thanks in advance