I want to change my nickname to the origin of

To change one's name in Origin  og into Origin https://www.origin.com/

On the right there is a box called "BASIC INFORMATION" , click "EDIT" in the top right hand corner of that box.  This will open the field editor, at this point type in your chosen name.  Be advised that your chosen name may not be available (the editor will tell you if it is available of if you must make changes).  When the editor approves your name as being free save your selection and you are finished.