How do i Trigger a Chaos Event?

Hello!
I’m trying to make a trigger to a Chaos event, basically what I’m trying to do is, when the player walks in a specific location a wall will break, everything is in place, the wall is already fractured and i placed the “FS_bombfield” which will be used to cause the destruction, i don’t know how to make the bombs trigger when the player walks by. So far i placed the trigger box at the location and tried to do it through the " Open level blueprint" but i can’t get it to work, can someone help me with this please? Huge thanks!