Doubt on ticket milan-zurich

Hello, I have the GA night and I a going to take a train after 19:00 from Milan to Zurich, is my GA valid or do I need to make a ticket?

Hiii

You just have to buy a train ticket from Milano to Chiasso or from Milano to Domodossola. (It depends where your train connection drives).

Your GA Night will be valid from Chiasso or Domodossola troughout Switzerland.

Have a good trip byeee