c++ webdriverxx - How to set args for chrome driver

I want to set "--mute-audio" arg in chrome driver . I use this code but no effect :

    vector <string> vec = { "--mute-audio" };



    auto gc = Start(Chrome().SetArgs(vec));



    gc.Navigate("https://www.youtube.com/watch?v=f2C16iL7BA4");

    Sleep(10000);