Lockout from course once completed
I am trying to create a feature that prevents users from accessing course content once it has been completed. We don't have the option of managing this through the LMS, so I'm trying to use Storyline to create what is basically a layer that sits over top of the page and prevents the users from being able to click on anything else, but I'm having trouble getting this layer to come up. I created the layer on the last page of course content, which users can't navigate away from. The layer is triggered with a True/False variable and is supposed to come up when the variable is true.
The idea is that I want users to see the last slide, exit, and when they come back into the course, they would see the "expired" layer telling them they have already completed the course. However, the layer never comes up when you re-enter the course even though it's set to always resume on the same page. Is the problem that Storyline can't track the variable between sessions? How else could I accomplish my desired outcome?