 So you have a blueprint in your level and you want it to target something in your scene to make it invisible when you press E, not a problem. And your blueprint create a new variable and that variables type should be the same as your target. To find out what that is, click on your target in the scene and on the right it will tell you what it is. Mine is a static mesh actor so that's what we're going to set it to down here. Then drag it in, get, drag out and set visibility. Once you've done that you'll need to make this variable public, compile, save. And now if we click on our blueprint object, we can use the eyedropper to manually set the target. You're done. Now every time you press the E key it will turn invisible. Hope that helps and as always I'll give a fantastic day and I'll see you around.