title: Add daterange to Google Search Appliance without displaying daterange in input
body: <p>I'm using the GSA Iframe and I have a date selection that the user can choose the date range. Is there a way to add the daterange without changing the value of the user's query? I know I can add daterange:YYYY-MM-DD..YYY-MM-DD to the query input box right before the user clicks submit but I don't want it to appear in the input box. I thought I could add a hidden input field named 'daterange' with the date value but that doesn't seem to work.</p>
  
  <p>Update: I have tried adding as_q as a hidden form element. This does work but seems to also add the date to the input box. </p>
  
  <p>I also tried adding daterange hidden form field and modifying the xslt </p>