I want to reset Checkpoints when spesific events fire (?)

First of all im gonna explain my game, my game is a obby game but you are chasing by npc if npc catchs you, you lose your all Checkpoints. The problem is i dont know how to reset checkpoints, here is my codes:

local Checkpoints = script.Parent


for i,v in pairs(Checkpoints:GetChildren()) do
    if v:IsA("BasePart") then
        v.Touched:Connect(function(hit)
            if hit.Parent:FindFirstChild("HumanoidRootPart") then
                local player = game.Players:GetPlayerFromCharacter(hit.Parent)
                if player then
                    if player.leaderstats.Checkpoint.Value < tonumber(v.Name) then
                        player.leaderstats.Checkpoint.Value = tonumber(v.Name)
                    end 
                end 
            end 
        end)    
    end
end

.

game.Players.PlayerAdded:Connect(function(Player)
    local leaderstats = Instance.new("Folder", Player)
    leaderstats.Name = "leaderstats"

    local Checkpoint = Instance.new("IntValue", leaderstats)
    Checkpoint.Name = "Checkpoint"
    Checkpoint.Value = 1

    Player.CharacterAdded:Connect(function(Character)
        repeat wait() until Player.Character ~= nil
        local checkpoint = game.Workspace.Checkpoints:FindFirstChild(Checkpoint.Value)
        Character:WaitForChild("HumanoidRootPart").CFrame = CFrame.new(checkpoint.Position + Vector3.new(0,2,0))
    end)

end)

I tried to reset like this but it didnt work,

wait()
local dum = game.Workspace.CellatBaba
local players = game:GetService("Players")
local lead = game.Players:WaitForChild("leaderstats", 1)

game.Workspace.CellatBaba.Hitbox.Touched:Connect(function(hit)
    local Player = game.Players:GetPlayerFromCharacter(hit.Parent)
    if game.Players:GetPlayerFromCharacter(hit.Parent) then
        game.Workspace.CellatBaba:SetPrimaryPartCFrame(CFrame.new(0,0,0))
        hit.Parent.Humanoid.Health = 0 
        Player.leaderstats.Checkpoint.Value = 0

    end         
end)    

Player.leaderstats.Checkpoint.Value = 0

i thought doing that i can reset checkpoints but i cannot, what should i do ?