Hi @leuciriccardo​,

I'm not too sure I understand what you're looking to do, would you be to explain a bit further?

Are you wanting to edit KML to import into Google My Maps? It looks like Google My Maps accepts quite a few different formats for import, including KML. Have you been able to successfully read in your KML and edit your data? We've got a good number of KML tutorials that may be a good place to start if you're feeling stuck.