I am creating a mini housie game in scratch and I have used the pick random block to pick between 1 and 27. And I have 27 backdrops with 1 to 27 numbers written on them. However I notice that after about 21-22 numbers the random picker is not able to pick any of the remaining numbers. Below is how my code looks like -

How can I fix this code so as to make sure it picks everything from 1 to 27 randomly?