How do I change the Intensity of a movable light with arrow keys when the static mesh component part is selected?

Hi All,

I have a rectangle light that has a static mesh attached which I can click on and move when playing the scene. I have used the default UE4 product viewer collector to allow the movement of the light/mesh. Now I want to be able to change the intensity of this light using the arrow keys. I have followed some blueprint tutorials for this but the intensity is not changing. I think I need to have an ‘on component press/hover’ or something to allow the change but don’t know how to implement this. There are also four of these lights in the scene that I want to be able to separately change the intensity of.

Any advice will be greatly appreciated. Please note that I am a novice at the blueprint part of UE

I have attached some pictures of my… attempt

This is supposed to be run-time, right?

How do you want to choose which component to interact with? Mouse click? By looking at it? Choose it from the UI?