Populate a single text box with multiple variable values

I'm wondering if there is a way to use the 'change content' action (or another) to populate a single text box with multiple variable values to create a string of text... I've got a form made of up of 17 some odd drop downs, 2 radio buttons in a group and 2 entry fields, and if they haven't made the correct selections I want it to show a feedback page of the selections they made next to the proper selections side by side. Sort of like:


Selection Name --- Your Selection --- Correct Selection


I'm hoping there's a way to do this for each form element in one fail swoop, without having 20-some change contents actions & text boxes...

Discussions have been disabled for this post