Display which questions are unanswered

Looks like it works if I put a condition on the onclick submit that the question variables are not empty otherwise submit. I put an action to hide and show the warning images if empty or not empty. Lastly, I deselected the standard "ensure all questions are answered" and made my own to display only if question variables are empty otherwise submit. I tested with our LMS and worked great until I ran out of variable condition space. I have about 62 questions on the page (check boxes and fill ins) and less variable space it seems.Does anyone have a workaround idea for this? This is my first time doing something like this so any ideas would be appreciated.

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