How to select (in blueprint) multiple of actors from scene?

Hey, What I need to do is to select/find multiple of object(blueprints) on scene and for example hide them all.
I tried do it with tags, folders(in outliner) or layers, but it’s not working (or what is more possible I’m doing it wrong).

I believe that Get All Actors Of Class is what you are looking for. This returns an array of all the objects of that class it found.

Note: "This is a slow operation, use with caution e.g. do not use every frame."