indeed, you can’t select a specific question from a randomized test as it’s unknown which pages will be part of the test. I tested your sample and both buttons are working alright for me? HTML content published from Lectora 17 will only work correctly when opened from a server. Did you use the “Preview” button in the bottom center of the publishing dialogue to view the course? This will use a virtual server and should work while just opening the index.html from the html folder won’t.