David, is there a question?

Something is probably off with your triggers. Post a link to the .story file here, we'll check what's wrong.

David, the quiz slide submit button is programmed automatically to jump to the next slide as soon as it's clicked if there are no feedback layers. So your triggers never get a chance to run. Additionally, the trigger for A is linked to Shape A, while the B-D are linked to the Sumit button. This looks odd.

Also, it's probably not an issue, but there's no reason to use a plus sign for positive numbers. If you're assigning a positive value to the field, CloudSet('A', '5'); should suffice (without "+" before 5).

You're very welcome!