? I want to save the models - that the player placed - when they leave. I'm a bit confused how

Here is my script:

Data = game:GetService("DataStoreService"):GetDataStore("BlastOffMoonData")
JSON = game:GetService("HttpService")
local base
local corner
game.Players.PlayerAdded:connect(function(Player)
	
	repeat wait() until Player.Character
	
	repeat wait() until workspace.TestTycoon.Owner.Value ~= ''
	
	if workspace.TestTycoon.Owner.Value == Player.Name then
		Tycoon = workspace.TestTycoon
		base = Tycoon.Base
		corner = Tycoon.Base.Position - (Tycoon.Base.Size/3)
	end
	local plrData = Data:GetAsync(Player.UserId)
	if plrData then	
		print(JSON:JSONEncode(plrData))
		Player.Money.Value = tonumber(plrData.Money)
	    for i, Object in pairs(game:GetService("ReplicatedStorage").GameItems:GetChildren()) do
		    for e, Data in pairs(plrData) do
			    if Object.Name == Data[1] then
				    local newObject = Object:Clone()
				    newObject.Parent =  Tycoon.TestItems
				    local location =tonumber(Data[2],Data[3],Data[4])
			    	newObject:SetPrimaryPartCFrame(CFrame.new(Data[2], Data[3], Data[4]))
			    end
    		end
    	end
	end
end)

The player removing save part:

game.Players.PlayerRemoving:connect(function(plr)

	local playerData = {
	Money = plr.Money.Value,
	Placed = {["itemPositions"] = {} }
	}
	if plr.leaderstats.SandboxSlot.Value == 'Sandbox1' then
	    Tycoon = workspace.TestTycoon
	end
	for i, v in pairs(Tycoon.TestItems:GetChildren()) do
		if v:IsA('Model') then
		    table.insert(playerData, {v.Name, v.PrimaryPart.Position.x,v.PrimaryPart.Position.y, v.PrimaryPart.Position.z})
		end
	end
	print( JSON:JSONEncode( playerData ) )
	Data:SetAsync(plr.UserId, playerData)
	
end)