Can't find reference for CameraActor (Static Camera)

Hello,

I just started to learn UE4 (with Blueprints first), and I have an issue with my GameMode blueprint.
I’m trying to make a Breakout game, and I want a static camera for my level. So I drag a camera from the modes and I get a good preview when putting some values (cf cameraActorView.png).

But when I push the play button to visualize, I get the player’s camera view. So I need to force my CameraActor’s view in my GameMode’s graph (cf gameModeGraph.png), but I can’t find any references… I’ve tried also to make a camera blueprint directly but I have the same issue.

Thank you for your attention.

Or is there any possibility to set a static camera for my game ?