so you would need to do persistent.open_cards_id.append(12). it should return "None" and then the card should show. It's also possible the card is already unlocked. Try just doing persistent.open_cards_id and see what returnsBut, how I need to use it?
I opened the console (shift+ O), write "persistent.open_cards_id.append 12" to open card #12, for example, but nothing happened..