Can't display fullscreen resolution dolphin

[alainrancy]

Hello I am having some trouble with dolphin. I can't get the fullscreen resolution on it i don't know why. It only gives me auto 4:3 and 16:9 on my graphics settings for display. On youtube I saw this guy having the ability to change his fullscreen resolution under display in dolphin https://www.youtube.com/watch?v=7fXKFxPbI8M I want to know how I can do that on mine i have the latest version thank you.