As stated in my question title I'm trying to update a Status field in my Infopath form using workflow from a separate SP list. I know that I have to use the true URL to the XML file in the form library. I'm doing this by building a string and placing in a variable. That part is working but the Update XML part is not. To test I'm using a link to an existing XML file in the library and trying to open XPath Builder. But when trying to open Tree View getting please enter valid XML. I know for a fact my URL is pointing to an XML file in the form library. Any thoughts on what the issue may be? As always thanks very much in advance.