I can't get Post Processing to do something very simple

Hi everyone!

I'm really stuck with something that for my understanding should be dead simple, I applied PostProcessing to my game, now I'm just trying to change the chromatic aberration at run time (as I want it to be temporary after a certain action) , I literally only want it to do what it already does when I change the intensity in the profile "by hand", but using code, I tried to use the code of the post processing git guide, but it does not produce any effect at all, I think it may be because of the layer (I'm trying to assign the camera layer as I want all the scene to be affected) , but I also tried with specific layers too without any success.

Sumary:

I simply want to change this value and get the same that I get if I use this slide, but with code, I can't stop thinking that it cannot be that hard!

my code (basically a copy of the guide in git), it is assigned to the camera, also tried assigning it to specific sprites without success

 public class PostProcessingRunTimeEditor : MonoBehaviour
 {
     PostProcessVolume m_Volume;
     ChromaticAberration m_aberration;
 
     void Start()
     {
         m_aberration = ScriptableObject.CreateInstance<ChromaticAberration>();
         m_aberration.enabled.Override(true);
         m_aberration.intensity.Override(1f);
 
         m_Volume = PostProcessManager.instance.QuickVolume(gameObject.layer, 100f, m_aberration);
     }
 
     void Update()
     {
         m_aberration.intensity.value = Mathf.Sin(Time.realtimeSinceStartup);
     }
 
     void OnDestroy()
     {
 
     }
 }