Is there any tutorial for an extension that just changes a variable in the about:config?

Hi all,
I am trying to create my first firefox extension, which will simply change the value of one of the about:config variables. I looked all over for tutorials that could help me, of course, but I found none that covers that specific matter (changing a variable of the about:config). Do you know any?
Thanks in advance!

Hi Maudluna,
I understand you would like to sign out your Apple ID from an iPad. You can do this easily by following the steps in the article below. I have also linked to an article about Family Sharing which can help you create and manage multiple accounts:
iOS: Sign in with a different Apple ID in the iTunes Store, App Store, and iBooks Store - Apple Support
Start or join a family group using Family Sharing - Apple Support
Family Sharing makes it easy for up to six people in your family to share each other’s iTunes, iBooks, and App Store purchases without sharing accounts. Pay for family purchases with the same credit card and approve kids’ spending right from a parent’s device. And share photos, a family calendar, and more to help keep everyone connected.
Thank you for contributing to Apple Support Communities.
Take care,
Bobby_D

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Is there any tutorial for an extension that just changes a variable in the about:config?

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