Hello,

I am conducting an experiment with multiple apps, in one early app, I asked participant to make choices over two lotteries (e.g. between lottery P and Q), and I ask them to make this choice again in the later app. Specifically, I would like to show them their intial choice, and allow them to change their decision. 

Ideally, I want to define a new variable in the later app, and set the initial value to their previous choices, which I stored in a participant value, and then they can freely change it. However, I have problem referring initial values to a participant variable in the player field.

So this is the code of how I stored the participant varialbe in the early app:

class Lottery_trans(Page):
    form_model = "player"
    form_fields = ['trans_pq']
    def before_next_page(player, timeout_happened):
        participant = player.participant
        participant.trans_pq = player.trans_pq
 
 
 
 and in the later session, I defined an updated variable in a different app:
class Player(BasePlayer):
trans_pq_up = models.IntegerField(
        choices=[
            [0, "Give me this left prospect from the envelope"],
            [1, "Give me this right prospect from the envelope"],
        ],
        widget=widgets.RadioSelect
        initial = vars(player.participant.trans_pq)
    )
    
    
but otree informs AttributeError: module 'otree.models.player' has no attribute 'participant'. Could you please tell me how to solve this problem? Thanks a lot!

Best,
Fantine