File path for IOS assets

3)How do I discover a device’s operating system (android or ios) so the app knows which path to use to get the html file - https://x.thunkable.com/projects/5b62ee9338e652270d9c53a9/VarList/designer (scrSystemInfo)

2)On iOS, it is impossible to work freely with the file system. You can only upload files using html - https://x.thunkable.com/projects/5b62ee9338e652270d9c53a9/VarList/designer (scrFileViewer)

Inside the html file, links to files uploaded to the project must begin with ./

Alex