How do I make it so one script CANNOT function until the transparency is set to 0 by another script?

Goal: I would like one script (script A) to allow another script to work (script B) based on transparency.

Problem #1: Is it possible to store my tools in ServerStorage rather than Lighting?

Problem #2: How can I make it so one script CANNOT function until the transparency of it is equal to 0?

Problem #3: Are the booleans false and nil completely alike?

Other Information:

WORKSPACE: Project (folder) -> Functions (folder) -> HammerGiver, HammerOutput, WrenchGiver, WrenchOutput, Planks (grouped model)

LIGHTING: Tools (folder) -> Hammer, Wrench

HAMMER GIVER/INPUT SCRIPT

function OnClick(PersonWhoClicked)
	local y = PersonWhoClicked.Backpack
	local z = game.Lighting.Tools["Hammer"] --hammer stored in "Tools" folder in "Lighting"
	z:Clone().Parent = y --gives hammer to player
	game.Workspace.Project.Functions.HammerGiver:Destroy() --destroys hammer giver
end

script.Parent.ClickDetector.MouseClick:connect(OnClick)

HAMMER OUTPUT SCRIPT

script.Parent.Touched:connect(function(p)
	if p.Parent.Name == "Hammer" then 
		game.Workspace.Project.Functions.HammerOutput.MeshPart.Transparency = 0 --allows the new location of the hammer to be visible
		p.Parent:Destroy() --destroys tool from backpack
		game.Workspace.Project.Functions.Planks.Plank1.Anchored = false --allows wooden plank borders to fall
		game.Workspace.Project.Functions.Planks.Plank2.Anchored = false 
		game.Workspace.Project.Functions.WrenchGiver.MeshPart.Transparency = 0 --reveals next objective or object for game
	end
end)

WRENCH GIVER/INPUT SCRIPT PROBLEM!!!

function OnClick(PersonWhoClicked)
	local y = PersonWhoClicked.Backpack
	local z = game.Lighting.Tools["Wrench"] --gives wrench from "Lighting"
	z:Clone().Parent = y
	game.Workspace.Project.Functions.WrenchGiver:Destroy() --destroys tool giver 
end

script.Parent.ClickDetector.MouseClick:connect(OnClick)

Notes: -hammer transparency is 0 -wrench transparency is 1

POSSIBLE SOLUTIONS

1. How do I make it so the WrenchGiver does not work until the MeshPart transparency is 0?
2. How do I remove the ClickDetector from the WrenchGiver until the MeshPart transparency is 0?

After I set the transparency for the WrenchGiver (input), it doesn't give me the tool, but rather says attempt to call a nil value and I don't know what to do. In the output it states, Attempt to connect failed: Passed value is not a function and it was located in Script 'Workspace.Project.Functions.WrenchGiver.Script', Line 13.