Attempting a 'POST' XMLHTTP request to action based on a blob URL created by an interactive userform on a webpage (that specifically generates a URL based on a selected item from a filename). Realize that string is created from the browser session/interaction, but is there an easier way to do this?

Ultimately, trying to take a static filepath/filename and create a URL from that, which is applicable for a 'POST' that takes action based on the URL.

Appreciate any help, in advance.