How do I create a file only on the first launch of the app using the file storage?

[Patryk_F]

Use this method to switch screens.

How can I make a refresh button?

Sure. You can use this to open any screen: [image] In above example it will close the current screen and open Screen1. In fact this method is used to correctly switch screens to avoid OOM or Invalid Window Token error.

Where Screen1 is, you can add whatever screen you want to open.