My Local Script only works in studio. It dose not work in studio for some reason? Please help me fix

Basicaly I want this to count the number of times you jump. If you reached a certain amount of jumps I want it to do something. For some reason It only works on studio. Here is the code:

local plr = game.Players.LocalPlayer.Character
local debounce = false
local debounce2 = false
local Jumps = game.Players.LocalPlayer.leaderstats
local JumpCounter = script.Parent.Parent.Jumps
local Sound = script.Parent.Parent.Sound
plr.Humanoid.Changed:connect(function(prop)
    if prop == 'Jump' and not debounce then
        debounce = not debounce
game.Players.LocalPlayer.leaderstats.Jumps.Value = game.Players.LocalPlayer.leaderstats.Jumps.Value + 1
JumpCounter.Text = game.Players.LocalPlayer.leaderstats.Jumps.Value
if(game.Players.LocalPlayer.leaderstats.Jumps.Value >= 50) then
	Sound:Play() 
	wait(3)
	Sound:Destroy()
	script.Parent.Parent.Trail1.Visible = true
else
	script.Parent.Parent.Trail1.Visible = false
end
	
        wait()
        debounce = not debounce
    end
end)