UserId index nil issue

Help and Feedback Scripting Support
,
#1

I am making chat commands for my game that only staff can use but I cannot get the staff check to work

local Staff = require(game:GetService("ServerScriptService"):WaitForChild("StaffList"))

local StaffCmds = {
	"/kick";
	"/ban";
	"/unban";
	"/tp";
	"/tphere";
	
}

local function checkPlayer(UserId)
	
	for _, StaffId in pairs(Staff) do
		
		if UserId == StaffId then
			
			return true
			
		end
		
	end
	
	return false
	
end

local function findPlayer(name)
	
	local NameLength = string.len(name)
	
	for _, player in pairs(game.Players:GetPlayers()) do
		
		if string.sub(player.Name,1,NameLength):lower() == name then
			
			return player
			
		end
		
	end
	
	return nil
	
end

game.Players.PlayerAdded:Connect(function(player)
	
	player.Chatted:Connect(function(msg, sender)
		
		msg = string.lower(msg)
		
		local splitString = msg:split(" ")
		
		local cmdName = splitString[1]
		
		if table.find(StaffCmds, cmdName) then
			
			local isStaff = checkPlayer(sender.UserId)
			
			if isStaff == true then
				
				if cmdName == "/kick" then

					local PlrToKickName = splitString[2]

					local Reason = splitString[3]

					if PlrToKickName then

						local PlrToKick = findPlayer(PlrToKickName)

						if PlrToKick then
							
							print(PlrToKick)

							PlrToKick:Kick(Reason)

						end

					end

				end
				
			end
			
		end
		
	end)
	
end)
#2

In Player.Chatted, the recipient parameter (you named it sender) is the player that the message was whispered to. However, this is deprecated.
Instead of indexing sender.UserId, use player.UserId.

#3

does it say on the documentation that it is deprecated?

#4

sender is probably nil because plr.Chatted dosent use a second argument, use player.UserId to check if they are staff in your chat script

#5

It does, however in your case you don’t want to check if the player that the message was whispered to is a staff member, but instead if the player themselves is a staff member. That is why you need to use player.UserId in your case.

https://developer.roblox.com/en-us/api-reference/event/Player/Chatted