Help needed, changing opacity and collision setting, in game.

New to forums, so I hope I’m posting this to the correct place. I am trying to use blueprints to lower opacity and remove collision on an object when clicked. So far I’ve tried a few things that lower the opacity of an object when clicked that were successful. I would like to build the game in first person, but if this is not possible it can be changed. Thanks in advanced for any and all help posted.