Question How to call a method when a bound property's value is changed from my editor?

I have a slider and a field that both binds to the same field, so that I can drag the slider and at the same time see the coresponding value in the field, or so I can set a precis value using keyboard input.

But I don't just want to change the value in a field, I want that value to update an object in the scene, e.g. set the intensity of a light.

Code (CSharp):

1. SerializedObject serializedController = new SerializedObject(controller);
2.  
3. SerializedProperty value = serializedController.FindProperty("_value");
4.  
5. Slider valueSlider = controllerRow.Q<Slider>("value-slider");
6. FloatField valueField = controllerRow.Q<FloatField>("value-field");
7.  
8. valueSlider.BindProperty(value);
9. valueField.BindProperty(value);

The values are updated updated correctly in my editor window, and on the object itself in the Inspector, but ofcorse nothing happens with the light itself. I want to use the "value" as a percentage to multiply it with the max intensity of the light (stored in the controller) and then update the light source with the new intensity, something like this:

Code (CSharp):

1. public float _value = 0f;
2. public float _maxIntensity = 1000f;
3.  
4. // Call this method everytime the _value field is changed.
5. private void SetIntensity()
6. {
7.     if (light != null)
8.         light.intensity = _maxIntensity * _value;
9. }

I tried binding to a property rather than a field, and added the method in the setter for it to be called, but Binding does not work for properties; serializedController.FindProperty("Value") becomes null.

Code (CSharp):

1. public float Value
2. {
3.     get { return _value; }
4.     set
5.     {
6.         _value = value;
7.         SetIntensity();
8.     }
9. }
10.  
11. private void SetIntensity()
12. {
13.     if (light != null)
14.         light.intensity = _maxIntensity * _value;
15. }

So how can I call a method when a bound field is being changed?

 

@jonathanma_unity can you help me out with this?