Why the model doesn't change position even with same code as other model that worked?

So I made a new game and I try to use hazard to make players die and the hazard place on the random grid. But the problem is I have 2 hazards (the first hazard changed position correctly except for the second hazard which uses same code as the first hazard)

The code worked with no error but the second hazard doesn't change position even with the same code as the first hazard, unlike the first hazard which changes position. I expect the second hazard to change position like the first hazard and here is the code.

Also, I use the server script because the hazard required to replicate to all servers and I use the "Play"mode.

local storeRandom = ""
local recentRandomized = false
local h = ""

while true do
    wait(3)

    local function random()
        storeRandom = math.random(1,16)
        if workspace.PlayGrid["Grid"..storeRandom].ActiveValue.Value == true then
            random()
        else
            recentRandomized = true
        end
    end

    if recentRandomized == false then
        random()
    end

    workspace.PlayGrid["Grid"..storeRandom].SelectionBox.Visible = true

    wait(1)
    local gridPosX = workspace.PlayGrid["Grid"..storeRandom].Position.X
    local gridPosY = workspace.PlayGrid["Grid"..storeRandom].Position.Y
    local gridPosZ = workspace.PlayGrid["Grid"..storeRandom].Position.Z

    workspace.PlayGrid["Grid"..storeRandom].SelectionBox.Visible = false

    h = math.random(1,2)

    local hazards = game.ServerStorage:WaitForChild("Hazard"..h)

    local hazard = hazards:Clone()

    if h == 1 then
        hazard.Parent = workspace.PlayGrid["Grid"..storeRandom]
        hazard:SetPrimaryPartCFrame(CFrame.new(gridPosX, gridPosY + 2.5, gridPosZ) * CFrame.Angles(math.pi, math.pi/2, math.pi))
    else
        hazard.Parent = workspace.PlayGrid["Grid"..storeRandom]
        hazard:SetPrimaryPartCFrame(CFrame.new(gridPosX, gridPosY + 2.5, gridPosZ) * CFrame.Angles(math.pi, math.pi/2, math.pi)) -- This code have a problem
    end

    recentRandomized = false

    workspace.PlayGrid["Grid"..storeRandom].ActiveValue.Value = true

end

Here is the video (download required): https://cdn.discordapp.com/attachments/678090587664023562/697299004802990110/robloxapp-20200408-1115282.wmv

The first Hazard is Spike

The second Hazard is Lava