HTML Form XMLSpy

I have done a HTML-Form to query Tamino. When I use this form in XMLSpy, the answer from Tamino is XML, but XMLSPy shows it in the “Browser” window so i can´t edit the XML code.
How can I either make XMLSpy open the answer from Tamino in a window for XML documents or change the browser view of the xml document to an editable format. Thank you.