Why is FireServer() in a local script not activating another local script?

I have a LOCAL SCRIPT in a BUTTON. I have another LOCAL SCRIPT in STARTERGUI. I have a EVENT in a FOLDER in RS. I want the LOCAL SCRIPT in the BUTTON ***to activate the ***LOCAL SCRIPT in STARTER GUI! Sorry for making so many things bold, its just because some people aren't understanding what I need fixed. Anyways

Local Script in the Button:

Player = game.Players.LocalPlayer
script.Parent.Text=tostring(script.Parent.ItemName.Value)..": Gamepass"

script.Parent.MouseButton1Click:connect(function()
    game.ReplicatedStorage.Events.Trails.CustomTrailEvent:FireServer(script.Parent.Parent.Parent.Parent.Parent.Parent.Name)
    print("WRWIJF!")
end)

Local Script in the StarterGui: (Only the first part of the script.)

game.ReplicatedStorage:WaitForChild("Events").Trails.CustomTrailEvent.OnClientEvent:Connect(function(guiname)
    local Player = game.Players.LocalPlayer
    local playerid = Player.UserId
    local id = 4785126
    print(guiname)
end)

Local Script in StarterGui got cut off, here is the rest: OnClientEvent:Connect(function(guiname)

I should have explained better last time. Also if I get flagged for this being answered already that makes no scense because it didn't. Thanks!