Resources/Information about adding fields to series form or category form in OMP 3.4

Software Support Open Monograph Press
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1

Hi everyone,
is there a resource/example on how to add fields to the series form /category form and save the data in the DB for OMP 3.4.?
Right now I am overriding the seriesForm.tpl to add my fields and then using

Hook::add('seriesform::execute', array($this, 'metadataExecute'));

to save the data but it somehow doesn’t save…
What am I missing?

Thank in advance!

2

In case someone is interested, I was using Schema::get::series but in OMP 3.4. it’s:

Hook::add('Schema::get::section', [$this, 'addToSchema']);