I'm getting a board's lists using this logic:
window.Trello.boards.get(board.id + "/lists", { cards: "open", fields:'all' }, successCB, errorCB)
This work fine but I can't get the customFields from cards. I was trying to add customFieldItems:true or card_customFieldItems:true in params but this isn't working.
Removing the "/lists" options custom fields come with the cards. But cards are not under it list.