Have a look at today’s tip on how to use the Pavlovia shelf. I think you want a dictionary entry with designer scope and you could have a second experiment which accesses the dictionary. Alternatively, depending on how you are generating gift cards you could have experiment scope and just add the voucher code to the Shelf entry for the participant directly. I’m imagining that the dictionaryFieldValue for each participant would be a list containing the reward amount and the voucher code.
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