Behavior: Appear after user scrolled until CSS selector -> can this be multiple times on same pag

So, I have an infinitely scrollable page that loads a new article once you get to the bottom of each article. It would be neat if the popup were able to appear at the end of each article. So I use the Appear after user scrolled until CSS selector behavior, but right not it only appears at the end of the first article. Is there a way to have it appear multiple times per page?