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need help activate door

hi everybody, I need some help to activate door in unreal engine 4 I’m using a MacBook Pro laptop I don’t know if that the case that I won’t work thou when I hit E key nothing seems to happen can someone show me how to get work please I had watch many videos on this but no luck still

Check this video.
https://www.youtube.com/watch?v=2aPZHdABxjM