Hass.io HomeBridge: where to add "visible" lines?

Yesterday I installed HomeBridge via a repository, everything went well: 20 devices in HomeKit. The problem is: I only need a few (non HomeKit compatible) because Hue itself is native HomeKit. So I changed the default visibility to hidden. I want to make certain lights visible.

So I added

light.bank:
  homebridge_visible: true

to my customize.yaml file. But that results in this error:
2017-10-31 22:00:06 ERROR (MainThread) [homeassistant.config] Invalid config for [homeassistant]: expected dict for dictionary value @ data[‘customize’][‘light.bank’]. Got ‘homebridge_visible:true’. (See /config/configuration.yaml, line 1).

What am I doing wrong?

So many details and options… I think your error is “homebridge_visible”. I’m using “homebridge_hidden: true” to hide specific items. Since you defaulted to hidden you would use “homebridge_hidden: false” to surface things through.