Sounds good
Can I suggest you post an idea on this site to support the UBX format?Then other users can vote it up and the format might get officially supported.I know of at least one other user who needed this, and yet there are no requests in our developer database.Posted as an idea at least we would see it and have a count of requests.
Thanks...will try that out
You'll basically have to reverse-engineer the form on that page.The easiest if probably to activate the browser developer tool and start monitoring network activity.Then manually fill out the form as you'd like FME to do it and inspect the in- and outbound requests, including form data and headers.
You then have to transfer that logic into the HTTPCaller, the documentation will be very helpful for this.