该值不会更改

问：

我正在制作一款剑术游戏，当你杀死一个玩家时，你会得到钱。你得到的钱是他们的等级乘以 4。我做了这个脚本：

    local Players = game:GetService("Players")
    
    function PlayerAdded(player)
        local leaderstats = Instance.new("Folder", player)
        leaderstats.Name = "leaderstats"
    
        local PStats = Instance.new("Folder", player)
        PStats.Name = "PlayerStats"
        
        local level = Instance.new("NumberValue", leaderstats)
        level.Name = "Level"
        level.Value = 1
        
        local reward = Instance.new("NumberValue", PStats)
        reward.Name = "Reward"
        reward.Value = level.Value * 4
    end
    Players.PlayerAdded:Connect(PlayerAdded)

和值转换器脚本

local Players = game:GetService("Players")

local character = script.Parent
local player = Players:GetPlayerFromCharacter(character)
local humanoid = character:FindFirstChild("Humanoid")

local Level = player.leaderstats.Level
local Reward = player.PlayerStats.Reward

function UpdateReward()
    if player.leaderstats.Level.Changed then
        local newReward =  Level.Value * 4
        Reward.Value = newReward
        print("1")
    end
    wait(1)
    UpdateReward()
end
UpdateReward()

出于某种原因，当级别发生变化时，奖励值不会发生变化。我需要这方面的帮助。

我原以为奖励价值会发生变化