Saving data for Thunderbird extension

[spacetimewarp]

Can someone point me to the documentation or example on storing simple values for Thunderbird extensions?

I found info on sqllite, but that seems overkill for a couple boolean values.
I tried browser.storage, but couldn't get it to work.

[omarce]

Hi, why don't you use Prefs as storage. Data can be Jsonized.
You can look at my (outdated) extension RemindIt