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