title: Filter in NAV Source component , datetime
body: <p>I need to provide the &quot;last 7 days&quot; filter in NAV Source component, I have to use the XML encoded values.
  I know that the date of today is &quot;h&quot;, so how can I encode to write &quot;last 7 days&quot;?
  I'd tried to write &quot;(h-7) but it's wrong.</p>