Problem to change camera pressing Key in trigger box

Hi everyone, can anyone help me? It’s very important. I would like to enter the trigger box and switch camera by pressing the Y key. It all works correctly but there is a problem: when I start, for a single time, pressing the Y key out of the trigger box still works and starts the camera change. I would like the camera to change only when I press Y inside the trigger box. After I press Y and change the camera for once (out of the trigger) if I go into the box and press Y everything works correctly, the problem is that first time when I change the camera from outside the trigger. I show you the BP, please I need urgent help.

Sorry i’m beginner, where exactly i have to use event beginplay?

I’v found a solution, Gate is the way, thanks.