HELP - AUTO COMPLETE

hi i am using rails auto complete plugin. I'm autocompleting over UserInfo Firstname as so auto_complete_for :user_info, :first_name, :limit => 30 everything works fine. but I want to filter out the first name given by auto_completer to those which has conditions :conditions => ["login !=?",'admin']) I tried overriding the call to auto_complete_for :user_info, :first_name, :limit => 30, :conditions => ["login !=?",'admin']) What is overriding the :conditions within the plugin so now, it doesn't do auto_complete anymore but simply listing all first_name except the admin's first_name. Any Solutions to my Problem