Optional Options not working

[lindingerm]

When i add an optional Option like "dimmer_off_threshold" to the config.json the Status of my On/off Switches stays at on. (I can switch on and off but the Status in HomeKit is always on)

There is no difference if i change "dimmer_off_threshold" to "0" or "5" and the Problem also occurs if i add any other optional Option like "poll_interval".

zway 2.3.6
homebridge-zway 0.5.0
homebridge 0.4.32