Editing the hidden status of an object in Quiz Review

Good afternoon to all,

I am trying to set up an elearning quiz with a mixture of question slides, and image slides that have click boxes hidden on them to simulate clicking where in a program they are required to click to complete a workflow.  I cannot use the HotSpot question style because that requires the Submit button to be used, and we are queue-ing several slides in a row to mimic a software workflow, as if it were happening in the real world as they click the buttons.  Each correct click gets a point.  However... when it comes time to Review Quiz after they have taken the test, I have no way of showing WHERE they should have clicked.

My thought was that I would create a hidden overlay that would show the correct spot on the slide, and only have it become visible after they have clicked the Review Quiz button.  I know that this requires the use of system variables, but for the life of me, while I know it will require a Conditional Advanced Action, I cannot figure it out.

I would greatly appreciate any suggestions you might be able to offer.  Thank you for your time and consideration.

-Josh