code: def api_params(service, file_id, owner_token, download_limit):
      
      service += 'api/params/%s' % file_id
      r = requests.post(service, json={'owner_token': owner_token, 'dlimit': download_limit})
      r.raise_for_status()
  
      if r.text == 'OK':
          return True
      return False
docs: Change the download limit for a file hosted on a Send Server