Adobe Captivate 12.3: complex interaction advice is needed

Hello,

I want to simulate a test using checkbox interactive components. Basically what I need is for hidden text to show under two conditions: 1. Checkbox enabled 2. Button pressed. As a result I expect that once a student picks answers they consider correct and press a button to check, they would get a unique comment for each chosen answer. A checkbox is unique for each text and button is the same for all. Screenshot is attached as example.

Thank you in advance!