Next button is active before conditions are met
I have several courses using the same interaction but it isn't working properly in this one course: the (default) Next button is active when the page opens.
I've compared the variables for this interaction with those from my other courses and have made the settings match (taking course/lesson/slide differences into account) but still the Next button for Lesson 3, page 3 of 7 of the attached .story file remains active when the page opens.
Please review the attached file and let me know if you see my error. Any and all assistance is greatly appreciated.