ChatService in ServerScriptService

[CanineData_Games1 (CanineData)]

I was trying to create a mute command using this function

require(game:GetService("ServerScriptService"):WaitForChild('ChatServiceRunner'):WaitForChild('ChatService')):GetChannel('All'):MuteSpeaker('CanineData_Games1', '', 120)

But nothing happens when I run it

[Valkyrop (JustAGuy)]

How to make a mute command?

I need a mute command, I know how to do everything but muting the player, any ideas? I just want them to not be able to speak in any chats at all, and then I also need to unmute them later on.