Hide_if_away set to true for new devices

Development
1

Hi all,
I am setting up device tracker for meraki cmx and I want to set hide_if_away to true by default for new devices.
My code for device handling is

yield from hass.async_add_job(
    partial(self.see, dev_id=clientMac.replace(':', ''),
       gps=gps_location,
       source_type=SOURCE_TYPE_ROUTER,
       gps_accuracy=accuracy,
       attributes=attrs))

adding it as attribute doesn’t work