So i have made program that changes username nick in the main menu, but it wont work, here is the code

public void rUsername() 
    {
        string uInput;
        Console.WriteLine("Rename Your Username: ");
        uInput = Console.ReadLine();
        username = uInput;
        Console.Clear();
        Console.WriteLine("You changed your username succesfully! Press Enter To Continue...");
        Console.ReadLine();
        Console.Clear();
        initOptions();
    }

btw in class Options i have variable public string username; So what i want to do is just from this function pass it to the username that is in class, why it is not working (No Errors btw)

How is it not working (what should be happening that is not, or what shouldn't be happening that is)? Is it not changing the name? Where does the username variable come from, and what is its value before this method is called (is it initialized)?