How do I use the "Send Message Upwards" node in visual scripting?

Specifically, what do i need to do to receive the message in the parent object? I have a player character object with a child object that has a collider acting as a trigger. I want it so that when the child collides with a wall, it sends that trigger upwards to the player character object. So far the child script is working properly, but i get the error "SendMessage PlayerWallTouch has no receiver!" when the parent object has a graph named PlayerWallTouch with a custom event inside also called PlayerWallTouch. What do i need to do to receive the message?

Thanks in advance