Issue with X4 Fill-In Feedback Boxes

mntaxi Community Member Posts: 11
I was creating a Fill-In-The-Blank question in Lectora Professional X.4 and for feedback I used the Set Text Block Action. When I uploaded the course onto Coursemill, a correct answer would set and display the Feedback Text Block, but it would not do so for an incorrect answer. When I change the incorrect feedback action to Show Message, it worked.

Why would this happen?