Unable to update a single item in the list

i created a list of variables first, then i save that list to the local database after saving if i want to update one individual list item i am unable to do it, it is not updating, has anyone come across a similar problem and has a solution, i did follow the powerup in appgyver “Editing items in a list” the main editing part i am unable to get clarity, please let me know if additional info is required

In my app I’m able to do this, I get the ID where the list was recorded and then I get the value I want to change I change it

Could you explain a little better what you are trying to do?