Does this new function change anything?

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Others have already answered, so my advice is: you should learn the Object-Oriented Programming.

local Handle = {}
Handle.Value = 0

function Handle:IncreaseValue()
	self.Value += 1
end

You can simulate class with metatable.

--< Variables
local Person = {}

local PersonClass = {}
PersonClass.__index = PersonClass

--< Methods
function PersonClass:GetName()
	return self.Name
end

--< Constructor
function Person.new(name, age)
	local self = setmetatable({}, PersonClass)
	
	self.Name = name
	self.Age = age
	
	return self
end

--< Initailize
local jackObj = Person.new("Jack", 36)
print(jackObj:GetName())

Object-Oriented Programming is very useful and can save a lot of time in big project. I therefore encourage you to do research on this subject or read the articles by clicking on the words in blue.