1 You go to

2 Look for the pack of 20us
3 Add the code (OS3874XVC)
4 Removing the basket game
5. You logging in origin
6 Looking for the pack again and... It is already automatically to $0
7 Raisins per box without paying
This code provides EA so there would be no problem. Also works for less than 20US Origin games
Sorry my bad english.
Edit:
Account must be United States and the data that are requested also.
Example: New York / / zip code: 10001