Why is my Tycoon Kit build model button not working? {SOLVED}

I was so stupid, I had 0 instead of false on line 17

model = script.Parent.Parent.Parent.Model -- Filepath of model to be built
purchasePrice = 150 -- How much money this costs to purchase
moneyIncrease = 0 -- How much MORE money they earn after purchase
moneyInterval = 0 -- How much SHORTER the interval is between income after purchase
buildMethod = "Appear" --[[
	Appear:
		Parts appear at the same time in their original position
	Fade:
		Parts fade (1 by 1) from completely transparent to their original transparency.
	Fall:
		Parts fall (1 by 1) from the sky to their original position.
--]]
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modelBackup = model:Clone()
modelName = modelBackup.Name
model:remove()
db = false -- I had 0 here :l
parts = {}

function checkForParts(v)
	if v:IsA("BasePart") then
		table.insert(parts,v)
	else
		checkForParts(v)
	end
end

script.Parent.Touched:connect(function(hit)
	if db == false then
		db = true
		if game.Players:FindFirstChild(hit.Parent.Name) ~= nil and hit.Parent.Name == script.Parent.Parent.Parent.OwnerName.Value then
			stats = game.Players:FindFirstChild(hit.Parent.Name):FindFirstChild("leaderstats")
			if stats ~= nil then
				money = stats:FindFirstChild(game.Workspace.Leaderboard.MoneyName.Value)
				if money.Value >= purchasePrice then
					money.Value = money.Value-purchasePrice
					script.Parent.Parent.Parent.MoneyIncrease.Value = script.Parent.Parent.Parent.MoneyIncrease.Value+moneyIncrease
					script.Parent.Parent.Parent.MoneyInterval.Value = script.Parent.Parent.Parent.MoneyInterval.Value-moneyInterval
					modelBackup.Parent = script.Parent.Parent.Parent
					script.Parent.Parent.Name = "Building..."
					if modelBackup:IsA("BasePart") then
						table.insert(parts,modelBackup)
						for i,v in pairs(modelBackup:GetChildren()) do
							checkForParts(v)
						end
						model = parts[modelBackup]
					else
						for i,v in pairs(modelBackup:GetChildren()) do
							checkForParts(v)
						end
						model = Instance.new("Model",script.Parent.Parent.Parent)
						model.Name = modelName
					end
					if buildMethod ~= "Appear" and buildMethod ~= "Fade" and buildMethod ~= "Fall" then
						buildMethod = "Appear"
					end
					if buildMethod == "Appear" then
						for i = 1,#parts do
							parts[i].Parent = model
						end
					elseif buildMethod == "Fade" then
						for i = 1,#parts do
							transparency = parts[i].Transparency
							parts[i].Parent = model
							repeat
								parts[i].Transparency = parts[i].Transparency-0.05
								wait()
							until parts[i].Transparency >= transparency-0.05 and parts[i].Transparency <= transparency+0.05
							parts[i].Transparency = transparency
						end
					elseif buildMethod == "Fall" then
						for i = 1,#parts do
							parts[i].Parent = model
						end
					end
					script.Parent.Parent:remove()
				else
					oldName = script.Parent.Parent.Name
					script.Parent.Parent.Name = "You need "..purchasePrice-money.Value.." more "..game.Workspace.Leaderboard.MoneyName.Value.." to buy this!"
					wait(3)
					script.Parent.Parent.Name = oldName
				end
			end
		end
		db = false
	end
end)