How do I make a door open by chatting a specific keyword?

I have just recently started building games thus I am quite new to the scripting processes, and I would like to know how to make a door open, temporarily, by typing a specific keyword in the chat.

Maybe this.

game.Players.PlayerAdded:Connect(function(player)
  player.Chatted:Connect(function(msg)
        if msg == "your message" then
	--input code for the door
	end
  end)
end)

I haven't tested this out. If this dosen't work, look above at the chats and click that link for further info about Player.Chatted, but what this code does is when the player chats the set message it fires the Chatted event to open the door.