That’s unfortunately not how HTTP passes forms; they get passed in the request header. You don’t really need to retrieve the page first, even; you just need to submit a properly formatted request with the form data in the header. It’s not HARD to do with PowerShell, but it’s not super easy, either. And, some servers may - for security reasons - implement additional items, such as cookies, which will make it more complex. You’ll need to understand exactly what the web server expects n