So each record in the idea collection would have a number property called idea number or something similar. You can set the initial value of the invisible input to be the first idea when they visit the page, then filter the list based off of what is in the invisible input. When you hit next it adds one to the input so now you’re viewing Idea #2. Hit next again, it changes the input by one, and now you’re viewing Idea #3 and so on.