Hey guys, Im trying to build a blueprint where the player goes through the door area and as he overlaps this area the lights start to flicker, I have the flickering material I just don’t seem to find anything that explains my idea, any help is appreciated 
Look into using the Level Blueprint. You will use box colliders (or some kind of trigger) and on trigger set the lights material to that. You can drag references of in world objects into your level blueprint from the World Outliner.