Find your player (probably be at the very bottom if it was the last player you created) then change ISCREATED to false and here's the tricky part (well, not for you, for me to explain )
ok, you need to change PLAYERPKG to a unique ID of your own... you figure your ID by the first 2 letters of your first name and the first 5 letters of your last name. Example: Tim Duncan's Playerpkg is 'tidunca'....allen iverson's playerpkg would be 'alivers' ...if your name was mohammed bastimolatus then your playerpkg would be 'mobasti'... For players like rick fox, steve nash or jalen rose...since they have less than 5 letters in their last name they have underscored (_) to make up for the room...(rifox__, stnash_ and jarose_)
anyway, change PLAYERPKG to your playerpkg...then you're set...