Can someone explain in layman terms how to set-up an emissive material to be toggled on /off with a key press?

[Michal_w007]

Thank you so much zacharymwade! Got it working in 5 minutes! Sooooooo much easier than the approach I had tried before: How can I toggle brightness with a timeline on an emissive map? - Blueprint - Unreal Engine Forums

Great stuff. Thanks again.