Is there a way to change what is a module script going to return?

I want to make a module script for my inventory, but i have no idea how do i change what is it going to return. Here is the complete script:

local dss=game:GetService('DataStoreService'):GetDataStore('GameStuff')

function changeTable(t,change)
	local invthings={'Knifes','ChosenKnife','Citrines','Coins'}
	for i=1,#change do
		t[invthings[i]]=change[invthings[i]]
	end
end

game.Players.PlayerAdded:connect(function(player)
	print'player joined'
	if string.sub(player.Name,1,6)=='Guest ' then
		player:Kick('Sorry,but this game does not support guests due to the data store feature. Please log in or create an account to play this game')
	else
		local key='id='..player.userId
		local async=dss:GetAsync(key)
		print'async obtained'
		if not async then
			dss:SetAsync(key,{Knifes={1},ChosenKnife=1,Citrines=0,Coins=0})
			async=dss:GetAsync(key)
			print'created new async'
		end
		local inventory=script.Inventory:Clone()
		print'inventory module cloned'
		inventory.Parent=player
		print'inventory module parented to player'
		changeTable(inventory,async)
	end
end)

game.Players.PlayerRemoving:connect(function(player)
	local key='id='..player.userId
	local inventory=player.Inventory
	dss:SetAsync(key,require(inventory))
end)