Set Windowed and Fullscreen on the UMG

Hi, I have a question: I made a Video Settings menu. It have some resolutions like 1920x1080 and Fullscreen and Windowed Buttons. My question is: How can I do if you select Windowed, every resolutions you select on future will be windowed and if you select Fullscreen every resolutions you select on future will be on fullscreen?

Also: How can I do if you selected 1920x1080 resolution on fullscreen, if you later put Windowed, it automatic set Windowed as 1920x1080 resolution?

Thanks.

Already Fixed.