I am working on a notebook app that stores notes in an app state variable. I want the user to be able to update the content of the already existing note stored in the app state variable. The major problem I am encountering is not being able to find that existing index of the item since it is in a list. How do I go about this

I have tried the following steps; Update app state> update item at index> update field(Title)> item index in list?…. The last part is where I am having issues