It doesnt print in output after i press x??

Whenever i press x it doesnt print worked?? I also have a Remote event called LightStart in ReplicatedStorage.

local repstore = game:WaitForChild("ReplicatedStorage")
local Remote = repstore:WaitForChild("LightStart")



local player = game.Players.LocalPlayer


mouse = player:GetMouse()
Cool = true


mouse.KeyDown:Connect(function(key)
    key = key:lower()
    if key == "x" then
        if Cool == true then return end
        Cool = false
        Remote:FireServer(mouse.Hit)


        print("Worked")

        wait(1)
        Cool = true


    end


end)