Creating a save script, Data store number Incrementing by 100??

Hoi there (Please don't downvote, just tell me what is the problem and I will fix it) So, I have attempted to make a script that saves an items position, it has has a variable which tells it's data store value and before I load it into my game, I have to check the Data store number so the position of other items won't get mixed up with other positions and all...

Error: I am using a loop which is cause an Int value to increment A LOT BY LIKE 100!! Any help would be great

Script In case you need it in order to help me:

wait(1)
local Ds = game:GetService("DataStoreService"):GetDataStore("Testing")
local saving = {} or nil
local key = "Player -- "..game.Players.LocalPlayer.UserId
saving = Ds:GetAsync(key)
print(saving)

local mouse = game.Players.LocalPlayer:GetMouse()
local moveModel = workspace:WaitForChild("Wood Crate")
local itemname = workspace.Tycoons.BasePlate:WaitForChild("ItemName")
-- don't detect the model we're moving
mouse.TargetFilter = moveModel
 
function MoveItem()
	-- make sure the mouse is pointing at something
	if mouse.Target then
		-- where we cast our ray from (shifted slightly up so the ray will hit the surface we're hovering)
		local origin = mouse.Hit.p + Vector3.new(0, 0.1, 0)
 
		-- cast our ray and get our normal, which is a unit vector
		local ray = Ray.new(origin, Vector3.new(0, -1, 0))
		local hit, pos, normal = workspace:FindPartOnRay(ray, moveModel)
 
		-- get the perpendicular vector and the angle between the two
		local cross = Vector3.new(0, 1, 0):Cross(normal)
		local angle = math.asin(cross.magnitude) -- division by 1 is redundant
 
		moveModel:SetPrimaryPartCFrame(
			CFrame.new(mouse.Hit.p) -- position
			* CFrame.fromAxisAngle(cross.magnitude == 0 and Vector3.new(1) or cross.unit, angle) -- angle, cross must not be Vector3.new()
		)
	end
end
 
-- check every frame
while wait() do
	wait(.01)
	mouse.Button1Down:connect(function()
		game.Players.LocalPlayer.leaderstats["Item Data Store Name"].Value = game.Players.LocalPlayer.leaderstats["Item Data Store Name"].Value + 1
		if workspace.Tycoons.BasePlate.IsPlacing.Value == true then
			moveModel:Clone().Parent = workspace.PlacedItems
			if saving ==  nil then
				saving = {}
			end
			table.insert(saving, "Name = "..moveModel.Name.."["..game.Players.LocalPlayer.leaderstats["Item Data Store Name"].Value.."]".." and Position = ("..moveModel:FindFirstChild("Hitbox").Position.X..","..moveModel:FindFirstChild("Hitbox").Position.Y..","..moveModel:FindFirstChild("Hitbox").Position.Z..")")
			print("Name = "..moveModel.Name.."["..game.Players.LocalPlayer.leaderstats["Item Data Store Name"].Value.."]".." and Position = ("..moveModel:FindFirstChild("Hitbox").Position.X..","..moveModel:FindFirstChild("Hitbox").Position.Y..","..moveModel:FindFirstChild("Hitbox").Position.Z..")")
			wait(1)
		else
			wait()
			-- nil
		end
	end)
	itemname.Name = moveModel.Name
	itemname.Parent = workspace.PlacedItems
	if workspace.Tycoons.BasePlate.IsPlacing.Value == true then
		MoveItem()
	else
		repeat wait() until workspace.Tycoons.BasePlate.IsPlacing.Value == true
	end
end

The error would add more than 1 value to the "Item Data Store Name" And it is lines 36 (Loop) AND 39 (Adding more than 1 Value), Any help would be great..