Edit a components properties

I have an Orthographic camera and I’d like to change to change the “Camera Settings -> Otrho Width” with an event. Where should I start? More helpful would be a tutorial that goes over this kind of thing in a more macro sense so I could apply the information to other things. Thanks!

The key as it turns out, is adding the reference to the component before trying to create the set node for the variable you want to change. Thanks to Mindfane for this.