Why is my checkpoint respawn script acting up?

This script works perfect in studio, and was working perfect in the actual game to, but for some reason it isn't working in the actual game now.

local char = script.Parent
local plr = game.Players:GetPlayerFromCharacter(char)
local stage = plr:WaitForChild("leaderstats"):WaitForChild("Stage")

for i,v in pairs(workspace:GetChildren()) do
    if v.Name == "Checkpoint"..tostring(stage.Value) then
        if char:FindFirstChild("Torso") then
        local torso = char:FindFirstChild("Torso")
        wait()
        torso.CFrame = CFrame.new(v.Position.X, v.Position.Y + 5.5, v.Position.Z)
        elseif char:FindFirstChild("LowerTorso") then
        local lowertorso = char:FindFirstChild("LowerTorso")
        wait()
        lowertorso.CFrame = CFrame.new(v.Position.X, v.Position.Y + 5.5, v.Position.Z)
        end
    end
end