LÖVE

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	t = {} 	--Here's a table.

	t.a = 1	-- The first index of the table is [a] and it has a value of [1]. 
				-- I might be misunderstanding how to use this "table.index" thing. 
				-- Maybe I'm supposed to use table.insert and make multiple values for one index-
				-- -and then refer to the values of said index, but I'll address that at the bottom of this post.
	
	test (t,a,1)	-- Here I'll call a function (test) and feed it the table to be addressed (t).
						-- Which index to change (a), and the amount to change the index by (1).
		
-- Side note. I don't remember if I have to define the function before I call it (I do in my actual code)-
-- -but It's easier for me to write it like this so that's what I'm doing.
				
	function test (n1,n2,n3) -- This function is meant go to a specific table (n1).
									-- Then a specific index held in the table (n2).
									-- Then change said index by a specified amount (n3).
	
		n1.n2=n1.n2+n3	-- I think I understand why this doesn't work.
	end						-- It goes to the table passed to the "n1" argument (t).
								-- Then it will not go to the index that was passed to the "n2" argument (a)-.
								-- -instead it will try to go to the index called "n2" and find nothing.
								-- If I write "n1.a = n1.a+n3" then it will work.
								-- However, this function needs to be general-
								-- -so that it can be called to go to any table, 
								-- -and change any index held in said table, by any numeric value.

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	test2 (t.a,1) -- Here I'm calling a function (test2)-
						-- -and feeding the function a specific table and index (t.a),-
						-- -and the amount to change the index by (1).
	
	function test2 (n,n1) 	-- (n) will contain both the table and index to change,-
									-- -and (n1) will be the amount to change the index by.
					
	n=n+n1	-- In this case I seem to be feeding the value held in the [a] index- 
	end		-- -of table [t] which is [1] to test2's argument [n].
				-- So all this function is doing is just 1=1+1 (not super useful).
				-- How would I make the [n] argument refer to the index of a given table-
				-- -instead of the value held by said index? 		

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	function test3 (n1,n2,n3,n4)
		for i, v in ipairs (n1) do
			if v.n2 == n2 and v.id == n3 then
			 v.n2 =  v.n2 +n4
			end
		end
	end