Using same question bank X times without drawing same question?

Hi all

I would like to create a game in Storyline that goes like this:

• we have a central board with several areas
• users click each area in turns to answer 1 question randomly drew from the corresponding question bank.
• each area is linked to a question bank of 3-5 questions
• after answering 1 question from the bank, it goes back to the central board
• the game finishes when users have a score (controlled by a variable) of 20. I give 1 point per correct answer.

Problem: I don't want them to answer the same question twice (unless it was previously incorrect). Is there a way to re-draw from a question bank without seeing the same question?

I have tried to add a variable per question. The variable = true once users click the Submit button the first time. When they come back, if the variable is true, it should skip this question and automatically moves to the next question randomly chosen. But in practice there is no "skip question" action. Any suggestion?