1) If, for example, Q1 is an array-checkboxes and has x-scale codes "X1, X2, X3" and y-scale codes "Y1, Y2, Y3, Y4", the relevance equation for following questions or sub-questions would be something like:
Code:
Q1_Y1_X1 == 1 OR Q1_Y2_X1 == 1 OR Q1_Y3_X1 == 1 OR Q1_Y4_X1 == 1
2) As stated, you would need to add two more hidden questions and then modify the listener to toggle those if column 2 or 3 checkboxes are checked. But why bother with that if you are upgrading?