Does anyone know what is wrong about this script? I have looked at it so many times.

I have looked at it time and time again and cannot figure out what is wrong with it. There is no error in the output. When you click one of the points to place the sand drill and other items it should change a value called "Placed" from false to true and therefor should give the player resources.

--// Modules
local resourceModule = require(script.Parent.Parent.Parent.Parent.ModuleScripts.Resource)
--// Sand Drill
local sandDrillInputs = {
leaderstatName = resourceModule.sand[1];
delayTime = resourceModule.sand[2];
ammount = resourceModule.sand[3];
}
--// Solar Drill
local solarDrillInputs = {
leaderstatName = resourceModule.solarpower[1];
delayTime = resourceModule.solarpower[2];
ammounr = resourceModule.solarpower[3];
}
--// Services
local ws = workspace
local rs = game.ReplicatedStorage
--// Objects
local sandDrill = rs.Parts:WaitForChild("SandDrill");
local solarDrill = rs.Parts:WaitForChild("SolarDrill");
local solarShield = rs.Parts:WaitForChild("SolarShield");
--// Values
local sandDrillPlaced = sandDrill:WaitForChild("Placed");
local solarDrillPlaced = nil;
local solarShieldPlace = nil;
--// Scripts
for _,plr in pairs(game.Players:GetPlayers()) do
	sandDrillPlaced.Changed:Connect(function()
		if sandDrillPlaced.Value == true then
		while wait(sandDrillInputs.delayTime) do
			if plr and plr.leaderstats and plr.leaderstats[sandDrillInputs.leaderstatName] then
				plr.leaderstats[sandDrillInputs.leaderstatName].Value = plr.leaderstats[sandDrillInputs.leaderstatName].Value + sandDrillInputs.ammount
			end
		end
		end
	end)
end

Here is the script that places the object "Sand Drill"

--// Sand Drill
local source = game.ReplicatedStorage.Parts:WaitForChild("SandDrill")
--// | SD
repeat wait() until source
--// Sand Drill Points
local folder = workspace.Points
local points = folder:WaitForChild("SandDrillPoints")
local placed = source.Placed.Value
--// Sand Drill Function V1.0
for _,v in pairs(points:GetChildren()) do
	if v.ClickDetector then
		v.ClickDetector.MouseClick:Connect(function()
			source.Parent = workspace
			wait()
			source:SetPrimaryPartCFrame(v.CFrame)
			placed = true
		end)
		v.ClickDetector.MouseHoverEnter:Connect(function()
			v.Color = Color3.fromRGB(0,255,235)
		end)
		v.ClickDetector.MouseHoverLeave:Connect(function()
			v.Color = Color3.fromRGB(163, 162, 165)
		end)
	end
end