How does GetButtonDown-equivalent looks like for Input System ?

Hi everyone this is the first time I use the InputSystem.

I am trying to use a button to switch the camera from FPS to TPS but when I press the action is performed continuously for each frame. I would like the key pressed to work only once as Input.GetButtonDown. I need it to be pressed, one time only. N.B. I think the correct perform is onRelease. So in the screen the Trigger Behaviou is set to Release Only https://forum.unity.com/threads/input-system-release-only.1293426/ for more details

Here is my code and a screen:

 public bool SwitchCamera { get; private set; }
 InputActionMap _currentMap;
 InputAction _switchCameraAction;
 
 void Awake ()
 {
     _switchCameraAction = _currentMap.FindAction("SwitchCamera");
     _switchCameraAction.performed += onSwitchCamera;
     _switchCameraAction.canceled += onSwitchCamera;
 }
 
 private void onSwitchCamera(InputAction.CallbackContext context)
 {
     SwitchCamera = context.ReadValueAsButton();
 }