Why are only one of these scripts not working?

So I just started using FE, and I am paranoid. I have two remote events in the replicated storage named ShowBrightnessGuiEvent and ShowWalkSpeedGuiEvent. So Far, only one of the scripts work. Am I doing something wrong?

 local ShowGuiEvent = game.ReplicatedStorage.ShowBrightnessGuiEvent

game.Players.PlayerAdded:connect(function(player)
    ShowGuiEvent:FireClient(player) -- player should be the player you want to send the message to
end)

 local ShowGuiEvent = game.ReplicatedStorage.ShowWalkSpeedGuiEvent

game.Players.PlayerAdded:connect(function(player)
    ShowGuiEvent:FireClient(player) -- player should be the player you want to send the message to
end)