Checklist loaded from client-side storage

Hey everyone,

It has been a while here trying to figure out how to build a task list but still facing some issues…

I am trying to get tasks from a client side storage file (.txt) format that has a json text.
I successfully match this data with the data source I created in my app.
these lists have checkboxes with TRUE/FALSE state.
I am wondering if I check a box would the file in client side storage update also ? because that is not happening in my case !!
also, I saw in the forum some posts speaking about UUID… I didn’t know where should I use it … ?

Any help would be appreciated.

Thank you!