Jailbreak train platform system script problem

Hello Devs,

This is a script made by Jailbreak train platform system? - #35 by Kord_K

local Players = game:GetService("Players")
local player = game.Players.LocalPlayer
local RunService = game:GetService('RunService')

local LastTrainCFrame

local Function
local Function2

Function = RunService.Heartbeat:Connect(function()

--------------------------------------------------------------- CHECK PLATFORM BELOW

local RootPart = player.Character.LowerTorso

local Ignore = player.Character

local ray = Ray.new(RootPart.CFrame.p,Vector3.new(0,-50,0))

local Hit, Position, Normal, Material = workspace:FindPartOnRay(ray,Ignore)

if Hit and Hit.Name == "RaftTop" then -- Change "RaftTop" to whatever the moving part's name is

--------------------------------------------------------------- MOVE PLAYER TO NEW POSITON FROM OLD POSITION

local Train = Hit
if LastTrainCFrame == nil then -- If no LastTrainCFrame exists, make one!
	LastTrainCFrame = Train.CFrame -- This is updated later.
local TrainCF = Train.CFrame 

local Rel = TrainCF * LastTrainCFrame:inverse()

LastTrainCFrame = Train.CFrame -- Updated here.

RootPart.CFrame = Rel * RootPart.CFrame -- Set the player's CFrame

LastTrainCFrame = nil -- Clear the value when the player gets off.


Function2 = player.Character.Humanoid.Died:Connect(function()
	Function:Disconnect() -- Stop memory leaks
	Function2:Disconnect() -- Stop memory leaks


The problem I am having is whenever i try to jump from a part to the platform it dosent let me go on it :