Simple Working Script

-- Services
local Players = game:GetService("Players")
local RunService = game:GetService("RunService")
local PathfindingService = game:GetService("PathfindingService")
local HttpService = game:GetService("HttpService")
local player = Players.LocalPlayer
local character = player.Character or player.CharacterAdded:Wait()
local humanoid = character:WaitForChild("Humanoid")
local hrp = character:WaitForChild("HumanoidRootPart")
local playerGui = player:WaitForChild("PlayerGui")

-- Helper functions
local function saveData(name, data)
    local stored = playerGui:FindFirstChild("SavedPositions")
    if not stored then
        stored = Instance.new("Folder")
        stored.Name = "SavedPositions"
        stored.Parent = playerGui
    end
    local obj = stored:FindFirstChild(name)
    if not obj then
        obj = Instance.new("StringValue")
        obj.Name = name
        obj.Parent = stored
    end
    if typeof(data) == "Vector3" then
        data = {X = data.X, Y = data.Y, Z = data.Z}
    end
    obj.Value = HttpService:JSONEncode(data)
end

local function loadData(name)
    local stored = playerGui:FindFirstChild("SavedPositions")
    if stored and stored:FindFirstChild(name) then
        local ok, data = pcall(function()
            return HttpService:JSONDecode(stored[name].Value)
        end)
        if ok then
            if data.X then
                return Vector3.new(data.X, data.Y, data.Z)