double jump

I tried some ways to make double jump, but, no one of they work, so, plis help me

Link of my game: https://microstudio.io/rianstar/joyultraadventure/

THANKS FOR THE HELP.

Joy = class 
  constructor = function( sprite )
    this.sprite = sprite
    this.hp = 4
    this.canDoubleJump = false
    this.jumpKeyReleased = true
  end
  
  update = function()
    particles.update()
    
    if keyboard.RIGHT then
      this.sprite.vx = 100
      this.sprite.name = "joy_run"
      this.sprite.hflip = 0
    else 
      if keyboard.LEFT then
        this.sprite.vx = -100
        this.sprite.name = "joy_run"
        this.sprite.hflip = -1
      else
        this.sprite.vx = 0
        this.sprite.name = "joy_idle"
      end
    end
    
    if keyboard.X or keyboard.UP then
      if this.jumpKeyReleased then
        particles.add(this.sprite.x+(random.next()-.5)*20,this.sprite.y-10)
        particles.add(this.sprite.x+(random.next()-.5)*20,this.sprite.y-10)
        particles.add(this.sprite.x+(random.next()-.5)*20,this.sprite.y-10)
        particles.add(this.sprite.x+(random.next()-.5)*20,this.sprite.y-10)
        if this.sprite.grounded then 
          this.sprite.vy = 250
          this.sprite.grounded = 0
          this.canDoubleJump = true
        elsif this.canDoubleJump then
          print("double jump")
          this.sprite.vy = 250
          this.canDoubleJump = false
        end
        this.jumpKeyReleased = false
      end
    else
      this.jumpKeyReleased = true
    end
    
    if not this.sprite.grounded then
      this.sprite.name = "joy_jump"
    else
      this.canDoubleJump = false
    end
  end
  
  draw = function()
    particles.draw()
  end
end

@Loginus the bug then i related yesterday was because of example in tutorials, and when i tried used him in my other game happened the same thing then happened in joyultraadventure, i don't have a sure but the menuscreen example probably is old.

@Loginus how can i put the double jump sprite in this code????

file joy function update

//.....................................
    if keyboard.X or keyboard.UP then
      if this.jumpKeyReleased then
        particles.add(this.sprite.x+(random.next()-.5)*20,this.sprite.y-10)
        particles.add(this.sprite.x+(random.next()-.5)*20,this.sprite.y-10)
        particles.add(this.sprite.x+(random.next()-.5)*20,this.sprite.y-10)
        particles.add(this.sprite.x+(random.next()-.5)*20,this.sprite.y-10)
        if this.sprite.grounded then 
          this.sprite.vy = 250
          this.sprite.grounded = 0
          this.canDoubleJump = true
          this.isJump = true
        elsif this.canDoubleJump then
          print("double jump")
          this.sprite.vy = 250
          this.canDoubleJump = false
          this.isDouble = true
          this.isJump = false
        end
        this.jumpKeyReleased = false
      end
    else
      this.jumpKeyReleased = true
    end
    
    if this.isJump then 
      this.sprite.name = "joy_jump"
    elsif this.isDouble then 
      this.sprite.name = "joy_double_jump"
    end
    if this.sprite.grounded then
      this.isJump = false
      this.isDouble = false
    end
//......................................