Need help with multiple response question

Hi,

I'm creating a multiple response question which is not using the norm or templated type.

In this question type, the 'Correct' and 'Incorrect' layers have to show up when the learner chooses either correct or incorrect answers after they click on the 'Confirm' button. Also, the layer 'Ans_blank' has to show up if learner didn't answer any question after the 'Confirm' button is clicked.

I tried to resolve this issue multiple times but to no avail. Just can't seem to get it right.

I have attached a copy of my .story file (I'm using SL3), and hope someone can help.

Thank you!