Am working with Ninja Forms (NF), and I want to dynamically update another block of HTML on the same post/page depending on data sent by a form created by NF after processing it on the back-end. I am able to receive the data and process it on my own plugin, but cannot seem to find a way to send the response back and update the other block of HTML on the browser after completion of processing, without tampering with NF code itself. The NF hook action itself returns void, thus I need another way to return that data. Is there such a way? Or do I have to actually develop that whole part (Form + Ajax request + Ajax response) personally? Or is there a WP forms plugin that allows one to process the callback data?