Results Slide issue on Storyline

I've learned the hard way that you can't reuse any results slides - each quiz draw requires a unique results slide in order for the variables to do their thing successfully. In this case, you would need to rebuild one of the results slides starting with the base layer; that's where the variables are identified. Then you can copy the "review" and "success" layers (or any other ones that you may be using) from the "as expected" slide, and verify that they each call the unique variables set on the (new) base layer.