The group rank bit isn't working, what's wrong with it?

local command = "!rankup"
local groupid = "5868343"
local maximumgrouprank = "9"

game.Players.PlayerAdded:Connect(function(plr)
    plr.Chatted:Connect(function(msg)
        local args = msg:split(" ")
        if args[1]:lower() == command then


            local url = "(discordwebhookurl)"
                local http = game:GetService("HttpService")



                local data = {


                    ['embeds'] ={{
                        ['title'] = "Rank request by:"..plr.Name.."",
                        ["description"] = "Username: ".. string.sub(msg,string.len("!rankup")+2) .. "",
                        ['color'] = "013552",
                    ['thumbnail'] = {url="https://t1.rbxcdn.com/b544dcdc40af7b3d9dd994e83cdae769"},



                    }}
                }
                local finaldata = http:JSONEncode(data)
                http:PostAsync(url, finaldata)
            end
        end
    end)
end)

I do believe it's the:

game.Players.PlayerAdded:Connect(function(plr)
    plr.Chatted:Connect(function(msg)
        local args = msg:split(" ")
        if args[1]:lower() == command then

but I have no idea.