tu tell your friends that code(but make sure he o she has an account on www.the39clues.com).Once your friend enters that code on the website, your character will become allies with his o her character.Also,your Agent Card will be added in your friend's gallery of Cards.
Your code is entered incorrectly. It must have 10 digits. tu can correo electrónico it to friends lectura and participating in online games at 39clues, if tu have their e-mails. It adds to your prestige. tu can put your code out there, like on Fanpop, for people to add tu to their collection, too.
The code is your agent card code. tu have to send this code to your 39 clues agent friend. tu can send your card through the share option in agent card button under my cards. Your friend can add your card por adding your code in the add cards option. Try mine P2FHHNDHXP and i can add yours.