Set humanoid walkspeed x jumppower to 0 not functioning?

I am creating handcuffs and they should set a player's humanoid.WalkSpeed and humanoid.JumpPower to 0, the script won't work. The only thing that works is the ArrestEvent. Please help!

LocalScript

--// Variables
local Player = game.Players.LocalPlayer
local Instances = script.Parent.Resource.Instances
local CaptureEvent = game.ReplicatedStorage.Remotes.Capture
local ArrestEvent = game.ReplicatedStorage.Remotes.Arrest
local ReleaseEvent = game.ReplicatedStorage.Remotes.Release
local UI = Instances.UI.ArrestGUI
local Tool = script.Parent
local Prefix = "http://www.roblox.com/Thumbs/Avatar.ashx?x=150&y=150&Format=Png&username="
--// Functions
Tool.Equipped:Connect(function(Mouse)
	Mouse.Button1Down:Connect(function()
		if Mouse.Target and Mouse.Target then
			local Target = Mouse.Target.Parent
			print(Target)
			for _,v in pairs(game.Players:GetPlayers()) do
				if Target.Name == v.Name then
					CaptureEvent:FireServer(Target.Name)
					if Player.PlayerGui:FindFirstChild("ArrestGUI") then
						return
					else
						--// Variables
						local Clone = UI:Clone()
						repeat wait() until Clone.MainFrame
						local Title = Clone.MainFrame:WaitForChild("Title")
						local ViewFrame = Clone.MainFrame:WaitForChild("View")
						local Picture = ViewFrame.Player
						Title.Text = "Detained - "..Target.Name
						Picture.Image = Prefix..Target.Name
						Clone.MainFrame.Active = true
						Clone.MainFrame.Selectable = true
						Clone.MainFrame.Draggable = true
						wait()
						Clone.Parent = Player.PlayerGui
						--// Functions
						ViewFrame.Arrest.MouseButton1Click:Connect(function()
							local target = game.Players:FindFirstChild(Target.Name)
							ArrestEvent:FireServer(target)
						end)
						ViewFrame.Release.MouseButton1Click:Connect(function()
							local target = game.Players:FindFirstChild(Target.Name)
							ReleaseEvent:FireServer(target)
						end)
						Clone.MainFrame.Close.MouseButton1Click:Connect(function()
							Clone:Destroy()
						end)
					end
				end
			end
		end
	end)
end)

Script: - Arrest Event Working -

--// Variables
local ArrestEvent = game.ReplicatedStorage.Remotes.Arrest
local ReleaseEvent = game.ReplicatedStorage.Remotes.Release
local CaptureEvent = game.ReplicatedStorage.Remotes.Capture
--// Asset Warmup
repeat wait() until ArrestEvent
repeat wait() until ReleaseEvent
repeat wait() until CaptureEvent
--// Functions
ArrestEvent.OnServerEvent:Connect(function(Player, Target)
	if Target.Character then
		local Character = Target.Character
		if Character.Humanoid then
			local Humanoid = Character.Humanoid
			Target.TeamColor = BrickColor.new("Really black")
			Humanoid.Health = 0
		end
	end
end)
ReleaseEvent.OnServerEvent:Connect(function(Player, Target) -- Broken
	if Target.Character then
		local Character = Target.Character
		if Character.Humanoid then
			local Humanoid = Character.Humanoid
			Humanoid.JumpPower = 50
			Humanoid.WalkSpeed = 16
		end
	end
end)
CaptureEvent.OnServerEvent:Connect(function(Player, Target) -- Broken
	if Target.Character then
		local Character = Target.Character
		if Character.Humanoid then
			local Humanoid = Character.Humanoid
			Humanoid.JumpPower = 0
			Humanoid.WalkSpeed = 0
		end
	end
end)