When posting code, use preformatted text (hit the button with </>
Example code
What is view path for the popup you want to popup?
You place the code in value changed event of your tag, which appears from your screenshot as correct.
You don’t need to worry about PageId and SessionId as the code handles that for you. If you don’t understand sessions, pages, and views, then you need to start there and fully understand the concepts.
If you put the correct view path into the script it should work. The code posted worked for me.