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![Jan Oberreiter](https://uploads.teamtreehouse.com/production/profile-photos/8513992/micro_me.jpg)
Jan Oberreiter
78,020 PointsThank you very much for all your help, I will sleep now and hopefully I will understand it tomorrow - too much for now!
I just don't' understand, how I can get Treehousestzdent2" to be out...
class User {
constructor(email, username, birthday) {
this.email = email;
this.username = username;
this.birthday = birthday;
}
changeUsername(username) {
this.username = username;
}
}
var user1 = new User('JavaScriptStudent@teamtreehouse.com', 'JSUser1', '1/08/1991');
var user1 = "TreehouseStudent2"
2 Answers
![Steven Parker](https://uploads.teamtreehouse.com/production/profile-photos/969492/micro_tool_chess_set_2.jpg)
Steven Parker
230,688 PointsA variable should only be declared once. And the task is not to re-assign "user1", but to use it to call your new method and pass the string to it as an argument:
user1.changeUsername("TreehouseStudent2");
This is an intermediate-level practice course. Is it possible you're taking it before you've done some of the more fundamental courses covering objects and methods?
![Sean Duff](https://secure.gravatar.com/avatar/6c794d1cd96d55d210124d378fb96cc1?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
Sean Duff
979 PointsThe key is to put user1.username = "TreehouseStudent2";
within the changeUsername() method. The line must be inside of a method in order to execute - being inside of the class is not enough...Being outside of the class won't do anything either.
Jan Oberreiter
78,020 PointsJan Oberreiter
78,020 Pointsthat's what I am planning, I will not start from the very beginning on, but I have to catch up a lot of things ... thankyou ... kind regards, Jan,