Can you set a windowed game to be vertical?

Hello! I was wondering if anyone knows if you can set a window to be vertical?
I have made an app with Unreal more than a game, and I want it to be 720x1280 on the screen, opposed to 1280x720.

My UMG/UI is made in portrait mode for a phone and wondering if I can make it where the game window itself takes on the same shape when the app is loaded. I have searched online for a decent amount of time and can’t seem to find anyone who has made a previous example and/or tutorial.

Thanks!

In game you can use this solution: https://answers.unrealengine.com/questions/26895/how-can-i-change-games-resolution-in-blueprints.html

And when you want to preview (PIE) your game in a certain resolution, you can click at “Advanced Settings” under “Play” and enter your resolution at “Play in New Window”.