No more rssi for google home as a tracker?

Configuration
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I was super excited to try this out as a bluetooth beacon but since .88 it appears they have changed a lot of settings, no more configuring scanning intervals??

how am i supposed to make it so home-assistant knows how far away i am from a certain room?

googlehome:
  devices:
    - host: 192.168.1.249
      rssi_threshold: -100
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I did a refresh and it popped up, but when trying to create a sensor for the rssi, it doesnt seem to work

platform: template   
    sensors:
      family_room_rssi:
        friendly_name: 'RSSI Davids Iphone'
        value_template: '{{ states.device_tracker.192_168_1_249_9c_e6_5e_0b_4b_c9.attributes.rssi }}'
        unit_of_measurement: "RSSI"