> The lines that were added disappear when I change layout
>
Setting the Listview to Global should fix that, but not saving it across closing and opening the application, if that's what you mean.
https://drive.google.com/uc?export=down ... EZid0pBMWM Here is a capx to demonstrate how to export the Listview content to LocalStorage (where LocalStorage can be easily replaced by NW.js filesystem), fully commented.
randomly
Once again I thank you for your help.
Thank you for using your time
To make a .capx
I will test it and put into practice and in the future to create a database, firebase or something.