Automatically resizing walls

Hi guys, i'm working on a game where you got a ball and it must go in a hole ,and I have made invissible walls so the ball can't roll of the platform. But its not resizing the screen so the ball can role out of the screen what i not want. How can i make this automatically resizing?
(Btw, i'm new to programming in C# and unity, i use it now for 4 months). Thanks!

 

I don't know exactly if I understand the problem. If you created invisible walls just to keep the ball into the platform, I don't understand why they should resize. Does the platform size change? If so, then you would have to manually resize the wall thru script.

How did you create those invisible walls? Does that have a Box Collider component attached?

Since they are invisible, I'd say you should make big walls .. .and make the box collider big in Length too, because if it is too thin, depending on the ball speed, Unity can fail and not detect the collision. You can change the collision detect mode, but it can impact performance.