Actually, there is already the Singing line for both Coach and Ellis in my vocalizer. It's in their Character-specific 8 radial menu, north position. Although, keep in mind that this menu has limited use (read more about that on the addon's main page).

引用自 RefferiGame:D：

why i cant say Team fortress 2 on offical servur but on local i can?

Because it uses my custom scripts and official servers ignore (don't allow) custom scripts.

i have a question how i use the story on ellis because i'm playing in local and don't hear the voices (i have all mods)

Player who is hosting a local server must have my vocalizer installed to be able to hear Ellis stories. You can host a local server game and then you should hear them.