Hi I Want that the player gets inside the door just when hits it not with a large radius , how can I do to reduce it?

I would say just scale it down, but that doesn't appear to work. (All my shrunk ones still load from pretty far away) Perhaps there's an Extra tab for those doors, much like how map markers have one to determine discover radius?

I checked and there is no radius there ... may be I could use a marker somehow?