Screen mode and resolution, not changing

Hello, I’m preparing a demo for Architecture Visualization, but I wanted to do a little Launcher (not only for this project but also for all my Unreal Projects for windows release) it’s made on C# and It works changing the settings on the GameUserSettings.ini file, the changes made on the scalability are working perfectly, but the options related to resolution and screen mode, no, as you can see in the images, the changes are taking effect in the file, but when I start it, it looks like is going to be on window mode, and then it appears on fullscreen.
Here is a photo of the changes.

In advance thank you for the help :slight_smile: