Is there any way when using the checkbox macro to give, let's say, 10 choices, but limit the number of things a person can hold to 4? In other words, I give them 10 objects: ball, spoon, fork, knife, hat, shirt, tie, jacket, socks, shoes as well as an intro warning that they can fit 4 in their bag. And if they check all 10 boxes, they receive a message that they can only choose 4 items from the list and therefore need to choose again, displaying those checkboxes a second time?
I should add, I'm using sugarcane.