Networkview.RPC not work

Hello everybody.
On the sever, I want to change a text that all clients see.

  1. I use the Unity Networkview template but only change the location but not the text.

    Then I want to use [RPC] to send message from server to client but I can not find Networking.RPC like video tutorials
    Error

    But can not send
    Please help me find the way change a text that all clients see.
    Thanks You!

I used unity 2017. Maybe this is the reason not found NetworkView.RPC