Is there possible that add a new component (e.x panel) to scroll box by clicking a button?

Thanks! Can you give this question some help?
Thx!!! Change a text widget dynamically

I try to follow your method to Set Text, but I can not get similar result.
The result like this figure:
Only the top widget show the text and the number has changed.

image
But my idea condition is hope that W1 W2 W3 W4 from the top to bottom.