[Solve] Group can't get objects after call kill()

Phaser 3
1

hello guys!! I found that group is so convenience to create a game object pool!!
But when I call group.Kill (or group.KillAndHide) function, the group will stop create another object :thinking:
When I called Kill(), removeCallback was not be called too (Same in this example)
Was my code have some problem?

        let CloudPool = this.add.group({
            classType: Phaser.GameObjects.Image,
            maxSize: -1,
            createCallback: (object) => {
                console.log("Create")
                object.setTexture(Texutre, 'darkcloud-' + (Math.round(Math.random() * 1) + 1))
                object.x = CenterX * 2 + (Math.random() * CenterX * 2) + object.width
                object.y = Math.random() * (CenterY * 2)
                object.speed = 1
            },
            removeCallback: (object) => {
                console.log('Removed', object.name); // Not work any time
                object.setActive(false)
                object.x = -object.width / 2
                object.speed = 0
                object.update = () => { }
            }
        })

        this.UpdatePool = () => {
            CloudPool.children.iterate(object => {
                object.x -= object.speed
                if (object.x < -object.width / 2) {
                    CloudPool.kill(object) // When kill it, the Get() function will not work
                }
            })
        }

        this.tweens.addCounter({
            loop: -1,
            repeat: -1,
            repeatDelay: 0,
            duration: 10,
            onRepeat: () => {
                CloudPool.get()
            }
        })

    }

    update() {
        this.UpdatePool()
    }

Thanks a lot !!!

** Update **

I solve it with group.remove(child [, removeFromScene] [, destroyChild]) !!!