If you are using the code by @sticks18 , that has capability.button which means it should be recognized as a button controller by any smartthings automation that let you assign a button to an action. That would include the official smartlights feature and core.
So if it does work as a button controller, you can use a button press to control anything that smartthings does, including turn on a virtual light.
The only thing is there was a recent platform change and now all these automations require that “number of buttons” also be defined or it will only respond to the first button. I don’t know if @sticks18 updated his code yet to include that or not.