[Closed] Change viewport background during animation? Is it possible?

Is it possible the viewport background to be changed at certain frame? For example at frame 1 the background to be image01, at frame 20 the background to be image02 and so on. When the animation is played from frames 1 to 19 the background will be image01, for frames 20 to 30 the background will be image02, from frames 31 to 50 the background will be image03.