I have a rotation of monadic groups, each sees a different picture. I have a number generator that tells which group the respondent falls into. In order not to make a different questions about each group because there are different incentives, I want to create a variable in which the answers are pictures. And I get from there with [question (\ “value \”), id = \ “……. \”], but not value (which is a digit to work with a generator of numbers), it is a option where are the photos.