Its telling me that its a nil value when Im trying to assign it a value, can someone help?

I have a tool that when you click on a player it changes a string value to the players name and then it pulls up a Gui with a button that says arrest and when you click it, its supposed to fire this script. But it keeps saying its nil.

Outputs: 
09:37:02.892 - Players.Player2.PlayerGui.ScreenGui.Frame.Attempted.LocalScript:10: attempt to index global 'Arrested' (a nil value)
09:37:02.893 - Stack Begin
09:37:02.894 - Script 'Players.Player2.PlayerGui.ScreenGui.Frame.Attempted.LocalScript', Line 10
09:37:02.895 - Stack End

Tool script:

local tool = script.Parent
local Mouse = game.Players.LocalPlayer:GetMouse()
tool.Activated:connect(function()
local Gui = game.Players.LocalPlayer.PlayerGui.ScreenGui.Frame
local Target = Mouse.Target
print("1")

local person = game.Players:GetPlayerFromCharacter(Target.Parent)
if Target == nil then return end --1
if Target ~= nil then--1
if person == nil then return end--1
if person ~= nil then--1
print(person.Name)
game.Players.LocalPlayer.PlayerGui.ScreenGui.Frame.PlayerName.Value = person.Name
Gui.Visible = true
end
end
end)

Attempt script:

Button = script.Parent
Player = game.Players.LocalPlayer
wait(3)
Name = Player.PlayerGui.ScreenGui.Frame.PlayerName
Arrested = game.Players:FindFirstChild(Name.Value)


Button.MouseButton1Down:connect(function()

	Arrested.Team = "Jail"
	Arrested:LoadCharacter()
end)