Trying to get a PickPocket script to work

Help and Feedback Scripting Support
#1

My friend gave me this script, I started editing it as there was a lot missing. The issue is , it wont work. Anyone got suggestions?
Code:

local itemtopp = "KeyCard"
local Players = game:GetService("Players")
 Players.PlayerAdded:Connect(function(player)
local mom = 	script:Clone()
mom.Parent = player.Character
local plr = game:GetService("Players"):GetPlayerFromCharacter(script.Parent)
local torso = script.Parent["Left Leg"]
local click = Instance.new("ClickDetector",torso)
click.MouseClick:Connect(function(player)
if player == plr then
--insert here
else
local finditem = plr.Backpack:FindFirstChild(itemtopp)
if finditem then
finditem.Parent = player.Backpack
else
--insert here
end
end
end)
end)

Thanks, if you can help would be great!

#2

Please debug the issue yourself first and come back with a detailed description of what doesn’t work / which part of the code doesn’t work and what you have tried already.

See:

#3
#4