Variables aren't setting correctly?

I am trying to make a Baldi's Basics game, but the script in the GUI I'm using for the problems isn't working correctly. Some variables don't get set, such as BaldiMad not being set to true when I need it to be.

Here is my code:

script.Parent.Parent.Number1.Text = tostring(math.random(0, 9))
script.Parent.Parent.Number2.Text = tostring(math.random(0, 9))

local num = 1
local wrongAnswers = 0



local runservice = game:GetService("RunService")

function onRenderStep()
	baldiMad = game.ServerStorage.BaldiMad.Value
	if baldiMad == true then
		game.Players:GetPlayers()[1].PlayerGui.Music:Stop()
	end
	textbookNum = game.ServerStorage.TextbookNum.Value
	amountOfText = game.ServerStorage.NumberOfTextbooks.Value
end

runservice:BindToRenderStep("ResetVariables", Enum.RenderPriority.Camera.Value - 1, onRenderStep)

script.Parent.FocusLost:connect(function()
	if tonumber(script.Parent.Text) and num <= 1 then
		if tonumber(script.Parent.Text) == tonumber(script.Parent.Parent.Number1.Text) + tonumber(script.Parent.Parent.Number2.Text) then
			script.Parent.Parent.Checkmark1.Visible = true
			script.Parent.Parent.NotNumber.Visible = false
		else
			baldiMad = true
			game.ServerStorage.BaldiSpeed.Value = game.ServerStorage.BaldiSpeed.Value + 1
			wrongAnswers = wrongAnswers + 1
			game.Players:GetPlayers()[1].PlayerGui.Music:Stop()
			script.Parent.Parent.Xmark1.Visible = true
			script.Parent.Parent.NotNumber.Visible = false
		end
		num = num + 1
		
		script.Parent.Parent.Number1.Text = tostring(math.random(0, 9))
		script.Parent.Parent.Number2.Text = tostring(math.random(0, 9))
	elseif tonumber(script.Parent.Text) and num == 2 then
		if tonumber(script.Parent.Text) == tonumber(script.Parent.Parent.Number1.Text) + tonumber(script.Parent.Parent.Number2.Text) then
			script.Parent.Parent.Checkmark2.Visible = true
			script.Parent.Parent.NotNumber.Visible = false
		else
			baldiMad = true
			wrongAnswers = wrongAnswers + 1
			game.ServerStorage.BaldiSpeed.Value = game.ServerStorage.BaldiSpeed.Value + 1
			game.Players:GetPlayers()[1].PlayerGui.Music:Stop()
			script.Parent.Parent.Xmark2.Visible = true
			script.Parent.Parent.NotNumber.Visible = false
		end
		num = num + 1
		
		if amountOfText < 1 then
			script.Parent.Parent.Number1.Text = tostring(math.random(0, 9))
			script.Parent.Parent.Number2.Text = tostring(math.random(0, 9))
		else
			script.Parent.Parent.Number1.Text = "0"
			script.Parent.Parent.Number2.Text = "0"
			script.Parent.Parent.Plus.Visible = false
			script.Parent.Parent.Divide.Visible = true
		end
	elseif tonumber(script.Parent.Text) and num == 3 and game.ServerStorage.NumberOfTextbooks.Value <= 1 then
		if tonumber(script.Parent.Text) == tonumber(script.Parent.Parent.Number1.Text) + tonumber(script.Parent.Parent.Number2.Text) then
			script.Parent.Parent.Checkmark3.Visible = true
			script.Parent.Parent.NotNumber.Visible = false
		else
			baldiMad = true
			wrongAnswers = wrongAnswers + 1
			game.ServerStorage.BaldiSpeed.Value = game.ServerStorage.BaldiSpeed.Value + 1
			game.Players:GetPlayers()[1].PlayerGui.Music:Stop()
			script.Parent.Parent.Xmark3.Visible = true
			script.Parent.Parent.NotNumber.Visible = false
		end
		num = 1
		wrongAnswers = 0
		
		script.Parent.Parent.Number1.Text = tostring(math.random(0, 9))
		script.Parent.Parent.Number2.Text = tostring(math.random(0, 9))
				
		script.Parent.Parent.Parent.Enabled = false
		
		if baldiMad == true and textbookNum == 1 or textbookNum == 2 then
			game.Workspace.Baldi:SetPrimaryPartCFrame(CFrame.new(10, 6, 45))
			game.Workspace.Baldi.LookScript.Disabled = true
			game.Workspace.Baldi.DecalPart.Anchored = false
			game.Workspace.Baldi.AIScript.Disabled = false
		elseif baldiMad == true and textbookNum > 2 then
			game.Workspace.Baldi.LookScript.Disabled = true
			game.Workspace.Baldi.DecalPart.Anchored = false
			game.Workspace.Baldi.AIScript.Disabled = false
		end
		
		script.Parent.Parent.ModalButton.Visible = false			
		
		game.Workspace.Textbooks:WaitForChild("Textbook"..textbookNum):Destroy()
		
		game.ServerStorage.NumberOfTextbooks.Value = game.ServerStorage.NumberOfTextbooks.Value + 1
		
		script.Parent.Parent.Checkmark1.Visible = false
		script.Parent.Parent.Xmark1.Visible = false
		script.Parent.Parent.Checkmark2.Visible = false
		script.Parent.Parent.Xmark2.Visible = false
		script.Parent.Parent.Checkmark3.Visible = false
		script.Parent.Parent.Xmark3.Visible = false
		script.Parent.Parent.NotNumber.Visible = false
		
		script.Disabled = true
	elseif tonumber(script.Parent.Text) and num == 3 and game.ServerStorage.NumberOfTextbooks.Value >= 2 then
		baldiMad = true
		wrongAnswers = wrongAnswers + 1
		game.ServerStorage.BaldiSpeed.Value = game.ServerStorage.BaldiSpeed.Value + 1
		game.Players:GetPlayers()[1].PlayerGui.Music:Stop()
		script.Parent.Parent.Xmark3.Visible = true
		script.Parent.Parent.NotNumber.Visible = false
		
		num = 1
		wrongAnswers = 0
		
		script.Parent.Parent.Number1.Text = tostring(math.random(0, 9))
		script.Parent.Parent.Number2.Text = tostring(math.random(0, 9))
		
		script.Parent.Parent.Plus.Visible = true
		script.Parent.Parent.Divide.Visible = false
				
		script.Parent.Parent.Parent.Enabled = false
		
		if baldiMad == true and textbookNum == 1 or  textbookNum == 2 then
			game.Workspace.Baldi:SetPrimaryPartCFrame(CFrame.new(10, 6, 45))
			game.Workspace.Baldi.LookScript.Disabled = true
			game.Workspace.Baldi.DecalPart.Anchored = false
			game.Workspace.Baldi.AIScript.Disabled = false
		elseif baldiMad == true and textbookNum > 2 then
			game.Workspace.Baldi.LookScript.Disabled = true
			game.Workspace.Baldi.DecalPart.Anchored = false
			game.Workspace.Baldi.AIScript.Disabled = false
		end
		
		script.Parent.Parent.ModalButton.Visible = false			
		
		local textbookToBeDestroy = "Textbook"..textbookNum	
		
		game.Workspace.Textbooks:WaitForChild(textbookToBeDestroy):Destroy()
		
		game.ServerStorage.NumberOfTextbooks.Value = game.ServerStorage.NumberOfTextbooks.Value + 1
		
		script.Parent.Parent.Checkmark1.Visible = false
		script.Parent.Parent.Xmark1.Visible = false
		script.Parent.Parent.Checkmark2.Visible = false
		script.Parent.Parent.Xmark2.Visible = false
		script.Parent.Parent.Checkmark3.Visible = false
		script.Parent.Parent.Xmark3.Visible = false
		script.Parent.Parent.NotNumber.Visible = false		
		
		script.Disabled = true
	elseif not tonumber(script.Parent.Text) then
		script.Parent.Parent.NotNumber.Visible = true
	end	
end)