Pomoc w dokończeniu skryptu lua

Potrzebuje na zadanie do szkoły zrobić grę, w której postacią zbiera się spadające obiekty, na których jest określona liczba, która jest wynikiem losowego działania jakiegos mnożenia. Za poprawny wynik zdobywa się punkt. Mi nalicza tylko punkt za zdobyty obiekt.
Czy może ktos ogarnąć kod bo gra działa ale tylko liczy punkt a nie działa mi mnożenie. Z góry dziękuję.

display.setStatusBar(display.HiddenStatusBar)
local cWidth = display.contentCenterX
local cHeight = display.contentCenterY

local physics = require("physics")
physics.start()
physics.setGravity( 0,0)

local enemies = display.newGroup()

-- parametry startowe
local gameActive = true
local bagMoveX = 0
local bag 
local speed = 10 
local numseaobject = 0
local seaobjectArray = {}
local onCollision
local score = 0
local multiplication = 0 // losowe działanie 
local object
local objectActive = true

-- funckje globalne
local removeSeaobject
local createGame
local createseaobject
local createbag
local setobjectOn
local next_number




	-- ustawienie tła
	local background = display.newImage("tlo.jpg")
	background.x = cWidth
	background.y = cHeight
	
	-- ustawienie punktów 
	textBullets = display.newText ("Mnożenie:  "..multiplication, 120, 30, nil, 30)
	textScore = display.newText("Punkty:  "..score, 630, 30, nil, 30)

	-- strzałki poruszania się
	local leftArrow = display.newImage("left.png")
	leftArrow.x = 300
	leftArrow.y = display.contentHeight - 30
	local rightArrow = display.newImage("right.png")
	rightArrow.x = 400
	rightArrow.y =display.contentHeight -30
	
	local function stopbag(event)
		if event.phase == "ended" then
			bagMoveX = 0 
		end
	end
	

	local function movebag(event)
		bag.x = bag.x + bagMoveX
	end
	

	function leftArrowtouch()
		bagMoveX = - speed
	end
	

	function rightArrowtouch()
		bagMoveX = speed
	end
	
	
	local function createWalls(event)	
		if bag.x < 0 then
			bag.x = 0
		end
		if bag.x > display.contentWidth then
			bag.x = display.contentWidth
		end
	end
	
function createbag()
	bag = display.newImage ("bag.png")
	physics.addBody(bag, "static", {density = 1, friction = 0, bounce = 0});
	bag.x = cWidth
	bag.y = display.contentHeight - 120
	bag.myName = "bag"
end


function next_number()
  return math.random(1, 9)
end
 
    local a = math.random(1, 9)
    local b = math.random(1, 9)
    local result = a * b
 
print(string.format("%d * %d = %d", a, b, result))



function createseaobject()
	numseaobject = numseaobject +1 

	print(numseaobject)
			enemies:toFront()
			seaobjectArray[numseaobject]  = display.newImage("seaobject.png")
			physics.addBody ( seaobjectArray[numseaobject] , {density=0.5, friction=0, bounce=0})
			seaobjectArray[numseaobject] .myName = "seaobject" 
			startlocationX = math.random (0, display.contentWidth)
			seaobjectArray[numseaobject] .x = startlocationX
			startlocationY = math.random (-500, -100)
			seaobjectArray[numseaobject] .y = startlocationY
		
			transition.to ( seaobjectArray[numseaobject] , { time = math.random (12000, 20000), x= math.random (0, display.contentWidth ), y=bag.y+500 } )
			enemies:insert(seaobjectArray[numseaobject] )
end


function onCollision(event)
	if(event.object1.myName =="bag" and event.object2.myName =="seaobject") then	
			
			
			score = score + 1
			textScore.text = "Punkty:  "..score
			removeSeaobject()
			
	end	

end

function removeSeaobject()
	for i =1, #seaobjectArray do
		if (seaobjectArray[i].myName ~= nil) then
		seaobjectArray[i]:removeSelf()
		seaobjectArray[i].myName = nil
		end
	end
end




function setobjectOn()
		objectActive = true
end

function objectStatus()
	
	if gameActive then
		createseaobject()
		if objectActive then
			if (multiplication == 0) then
		 	createobject()
		 	objectActive = false 	
			end
			if (multiplication == 1) then
		 	createobject()
		 	objectActive = false 	
			end
			if (multiplication == 2) then
		 	createobject()
		 	objectActive = false 	
			end
			if (multiplication == 4) then
		 	createobject()
		 	objectActive = false 	
			end
		end
	end

	
end

function startGame()
createbag()

rightArrow:addEventListener ("touch", rightArrowtouch)
leftArrow:addEventListener("touch", leftArrowtouch)
Runtime:addEventListener("enterFrame", createWalls)
Runtime:addEventListener("enterFrame", movebag)
Runtime:addEventListener("touch", stopbag)
Runtime:addEventListener("collision" , onCollision)

timer.performWithDelay(5000, objectStatus,0)
timer.performWithDelay ( 5000, setobjectOn, 0 )
timer.performWithDelay(300, checkforProgress,0)

end

startGame()