Access App Settings Value in JavaScript

Im a German Developer and currently working on my first NextCloud Application.
I already have a good (and working) base now and wanted to add some Administrator Settings to my App.
I already am at a point where the Value of this single Setting will be saved and loaded in the Settings Page themselves. Because i would need the Value in JavaScript, i tried to access it with

console.log(OCP.AppConfig.getValue('berichtsheft', 'pdf_auto_date', 'no'));

but i just get ‘undefined’ in the console.

I can access the value in PHP but dont know how to use it in JavaScript.

If i try logging


without (), then i will see the Function but i cant call it.

Thanks for reading all this and your help.