Append the contact variable to the contacts array inside of the address_book variable.
NameError: undefined local variable or method `contacts' for main:Object Did you mean? contact
contact = Contact.new contact.first_name = "My" contact.last_name = "Name" address_book = AddressBook.new address_book = contacts.push(contact)
Clayton PerszykTreehouse Moderator 46,095 Points
contacts is a property on address_book. In your code, you are pushing the contact onto an array that doesn't exist and trying to assign that to the address_book variable.
your answer should look similar to this: