Setting log_level for zigbee2mqtt

In an effort to reduce sdcard writes, I’m trying to set the log level of the zigbee2mqtt addon. But the configuration that hassio has a different format than the configuration page on the z2m site:
https://www.zigbee2mqtt.io/configuration/configuration.html

When I try this, it barks at me:

I’ve tried critical with and without the quotes.

Only settings I’ve tried are “debug/info/warn/error”

Hope its of help.