why is my blocks position not changing in this system? [youtube video link for clearer information]

I made a placement system where it makes you create blocks. However when i click it only stays the same place.

To get a clearer footage look at this link

Here's the local script;

local Button = script.Parent
local Player = game.Players.LocalPlayer
local Mouse = Player:GetMouse()

local IsAbleToSet = false
local Activated = false

local AggroMag = 50
local RemoteEve = game.ReplicatedStorage.RemoteEvent
local Decider = game.ReplicatedStorage.Dec

Button.Activated:Connect(function()
	Decider.Parent = game.Workspace
	
	Activated = true
	
	Mouse.Move:Connect(function()
		local PosX = Mouse.Hit.X
		local PosY = 2
		local PosZ = Mouse.Hit.Z
		
	Decider:MoveTo(Vector3.new(PosX, PosY, PosZ))
	
	local HumanoidRootPart = Player.Character.HumanoidRootPart
		
		if (HumanoidRootPart.Position - Decider.Deciderb.Position).Magnitude > AggroMag then
			IsAbleToSet = false
			Decider.Deciderb.BrickColor = BrickColor.new("Really red")
		else
			Decider.Deciderb.BrickColor = BrickColor.new("Lime green")
			IsAbleToSet = true
	end
	end)
	
	Mouse.Button1Down:Connect(function()
		if (IsAbleToSet == true and Activated == true) then
			RemoteEve:FireServer(Decider)
		end
	end)
end)

Here's the script;

local RemoteEve = game.ReplicatedStorage.RemoteEvent

RemoteEve.OnServerEvent:Connect(function(player, Decider)
	
	local Block = Instance.new("Part")
	Block.Name = "Block"
	Block.Size = Vector3.new(22.97, 15.38, 2)
	Block.Anchored = true
	Block.Material = Enum.Material.WoodPlanks
	Block.BrickColor = BrickColor.new("Khaki")
	Block.Parent = game.ReplicatedStorage
	
	local NewBlock = Block:Clone()
	
	NewBlock.Parent = game.Workspace
	
	game.ReplicatedStorage.Dec.Deciderb.Position = Decider.Deciderb.Position
	NewBlock.Position = game.ReplicatedStorage.Dec.Deciderb.Position
end)