Would this work for a custom Chatbar?

Message = script.Parent["Message"]
Chatbar = script.Parent

function Chat()

local mouse = game.Players.LocalPlayer:GetMouse() 
    mouse.KeyDown:connect(function (key) 
        if key == 'enter' then 
    game.Players.PlayerAdded:connect(function(pl)
    pl.Chatted:connect(function(msg)
        msg = Message.Text
    end)
    end)
    end
    end)
end