Multiple response built in quiz not reporting incorrect message

Hi All - Working on a Storyline project and relatively new to using quiz slides.  Created Multiple response 10 checkboxs quiz using the built in quiz template.  Need to have learner identify the correct 6 options a processs providedes. If a learner selects just one wrong response and submits it , they receive an Incorrect message. When I have tested the quiz, I get correct message with no problem but when I deliverately choose the incorrect options, I am not getting any incorrect message when  player's submit button.  I rebuilt the question and changed the configuration several times, but I am still not getting the correct outcomes. I didn't see any tutorials that address this issue so that left writing in to get some help.  Not sure if I need to be setting up any conditons, but I was thought that once you selected all the correct responses in the edit form, that slide backoffice software would automatically trigger an incorrect message, if a learner chooses an option that doesn't fit quiz profile.  Any help her would be welcome.