How can I make a Staff Channel Work in game?

Hello Developer, I need your help to fix this to see what wrong with it as staff chat don't work in studio and it dose not work in game too please help me.

This is what I tired: Script

``local plrs = game:GetService("Players") local sss = game:GetService("ServerScriptService")

local chatService= require (sss:WaitForChild("ChatServiceRunner"):WaitForChild("ChatService")``

local staffChannel = chatService:AddChannel ("Staff")
staffChannel.Joinable = true
staffChannel.AutoJoin = false

chatService.SpeakerAdded:Connect(function(name)
    local plr = game.Players:FindFirstChild(name)
    if plr and plr: GetRankInGroup(9813281) >= 200 then
        local speaker = chatService:GetSpeaker(name)
        speaker:JoinChannel("Staff")

end)``

Local Script

local chat = game:GetService("Chat") local chatModules = chat:WaitForChild("ClientChatfodules") local chatSettings = require(chatModules:WaitForChild("ChatSettings")) local chatWindow = require(chat:WaitForChild("ChatScript"):WaitForChild("ChatMain"):WaitForChild("ChatWindow")).near()

chatSettings.ShowChannelsBar = true chatSettings.EchomessagesInGeneralChannel = false

chatWindow:AddChannel("Staff")``

If you could help me that would be great thank you?