Short answer
Well, it "works" if you change line 29 to
- $self->{SETTINGS}{thing1} = 7;
Long answer
What's happening is that you bind the references in BuildMenu()
- ['checkbutton', 'thing1', -variable => \$self->{SETTINGS}->{thing1}, ...
before initializing the values. (autovivification helps here)
But with
- $self->{SETTINGS} = { thing1 => 7 };
are you overwriting the old hash including its bound element thing1 inside, with a new hash and a different thing1 ...
I'd rather change that timing.
NB: checkbutton will toggle between 0 and 1 - those 3 and 7 are considered false like 0.
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