Looking through Roll20 sheet worker documentation and examples, I don't see a way to detect when a new item is added to a repeating section - when the "Add" button is clicked. Is there one? on(change) doesn't work in this instance. Instead, I have to wait until the contents of the repeating section are changed, which isn't what I want. For example, I have a limited list of armor types. When a new piece of armor is added to the character's "worn" list (a repeating section), I want to call a function that retrieves the armor option's armor class value and auto-display that in the "AC" <span> of the newly added item.