cefsharp change screen information being passed

Good afternoon, is it possible to change the information that the browser sends to the site? namely the screen resolution? I tried it, but it didn't work

settings.CefCommandLineArgs.Add("Screen-width", "600"); settings.CefCommandLineArgs.Add("Screen-height", "800"); Cef.Initialize(settings); chromeBrowser = new ChromiumWebBrowser("http://ipleak.net/");