Hello,
i created a quiz, radio button style, giving value 1 and code Y to all exact answers, as in the image below:


Right now i'm showing an assestment total at the end of the quiz.
How can i also show to users which answers they got wrong, at the end of the quiz?

For example: Question 3 "where is Chicago" you answered "California", correct answer was "Michigan"

Thank you for your help.

Despite the correct answer being "Illinois" not "Michigan" (smart ass, I know... ), I think you could easily do this with Expression Manager. It will involve quite some code, because I think you will have to create this for every single question you want to show the error, but it should be totally fine.

I am no programmer, but I would go like this:

if question1 is not equal "correct answer" write ....

There are quite some good examples on tailoring and "reporting" in the documentation. TMSWhite has made quite an effort there.