I am having 5 pages on my form. If I want to make different dds call on page change event of page controller based on the current page. Could you please advise on how can I achieve this?
In your page change rule you can access the info object to determine the IDs of the from and to page.
You can also add a page load rule to a specific page, rather than to the overall page controller, if that helps you isolate the behaviour you want to the page where it's needed.