Fill in all the information, but before hitting Submit press F12 to bring up the web console. In your web console (depending upon the browser, the names and icons are different), look for the network tab. Then press enter. If Java is sending a request to a server, you should be able to capture it here. You should also be able to see what the response is. You need to figure out if it's using REST or SOAP. Once you know that, you can attempt making the server request and capturing the response in VBA.