Help for parade system

Hello everyone !
So i am currently trying to make a parade system for my melee game.Recently I got a tip from a Mordhau dev (MORDHAU Devblog - #1 Basics - YouTube).He told me about his defense system
“There’s a way to get a fairly simple system that works reasonably well: attach a collider like a small box in front of the player, roughly where his crosshair would be. If the weapon tracer hits this, have it be a parry. We opted to go away from this method because we wanted more control over the parrying process, but it’s a good start and might be fine depending on your requirements.”
I need help on triggering the collision of this box when it hits…
Any help is appreciated :smiley: