this four corners script gets removed after anyone says ";", any help?

hii!! i made this fourcorners script for whenever someone chats and says the word commands, but for some reason whenever anyone includes the symbol ";" it removes the four corners. can anyone help?

game.Players.PlayerAdded:Connect(function(player) -- runs every time a player joins
    player.Chatted:Connect(function(msg)
        if player:GetRankInGroup(11882122) >= 5 then
            if msg == "!fourcorners" or msg == ":fourcorners" then
                if workspace:FindFirstChild("FourCorners") then
                else
                    print("added")
                    game.ReplicatedStorage.FourCorners.Parent = workspace
                end
        elseif msg == "!delete corners" or msg == ":delete corners" or "!remove corners" or msg == ":remove corners" then
                    game.Workspace:FindFirstChild("FourCorners").Parent = game.ReplicatedStorage
                    print("removed")

            elseif msg == "!start fourcorners" or msg == ":start fourcorners" then
                if workspace:FindFirstChild("FourCorners") then
                else
                    workspace.FourCorners.WorkFourcorners.Disabled = false
                end

            elseif msg == "!end fourcorners" or msg == ":end fourcorners" then
                if workspace:FindFirstChild("FourCorners") then
                else
                    workspace.FourCorners.WorkFourcorners.Disabled = true
                end
            end
        end
    end)
end)