什么导致 Corona 中的重新开始游戏功能出现问题？

重新开始游戏的函数似乎不起作用，我不知道原因。气球和分数都被重置了，但是游戏没有被重置，我不能再次射击气球。(另外，askUser，yesBtn和noBtn也没有消失)

function createBalloons(a, b)
  for i = 1, a do
     for j = 1, b do

         local balloon = display.newImage ('balloon_fat_red.png', 270+ (i * 30), 80 + (j * 50))
         balloonText = display.newText(hiragana_array[x+1], 300, 125)
         balloonTextt = display.newText(hiragana_array[x+2], 300, 175)
         balloonTexttt = display.newText(hiragana_array[x+3], 300, 225)
         balloonText:setFillColor( 1,1, 0 )
         balloonTextt:setFillColor( 1,1, 0 )
         balloonTexttt:setFillColor( 1,1, 0 )
         balloon.name = 'balloon'
         physics.addBody(balloon)
         balloon.bodyType = 'static'
         table.insert(balloons, balloon)
         end
    end
    target.text = #balloons
end

function restartLvl()
    for i = 1, #balloons do
        display.remove(balloons[i])
        print ("restart level")
    end
    
    score.text = '0'
    ballRemain.text = '3'
    balloons = {}
    createBalloons(1, 3)
    askUser.isVisible = false
    yesBtn.isVisible = false
    noBtn.isVisible = false
    print("time from start: ", (system.getTimer()-gameTime))
    print('send mail')
    sendMail()
end