How to create a global variable that can be accessed in all layers of the application. Accessing an element ID and updating

I am trying to update a text dynamically but without success. clicking on a button the text is updated

https://stackoverflow.com/questions/67410582/how-to-create-a-global-variable-that-can-be-accessed-in-all-layers-of-the-applic May 06, 2021 at 08:59AM