Help with Firebase item in listview

Good night! First of all I would like to clarify that I searched (a lot) in the forum and on the internet and I could not find the solution. Maybe you don’t know how to look for it! Also know how to excuse my English, that’s already Google translate’s fault !!

I attach an image of the way I generate a database in firebase (with a unique ID) and all the lists are built the same way.

On another screen I want to build a list and show the variable “Dia” (item) in the listview as an item but I can only get it to show me the ID. Is there a way to do that?

Thank you!!