title: Accessing fields in alpaca forms from external source
body: <p>I am trying to integrate an HTML page, built using alpaca forms, with an external python server.  Ideally, I'd use websockets to pass a key and value, which would then populate the corresponding field in the alpaca form.  I've not been able to find an example of how to do this, so 1)  Is it possible?  and 2) are there any examples floating around out there?</p>
  
  <p>Thanks...</p>