can't scroll dynamically

[ishannadeep]

I have an excel panel, top side of it has employees and left side of it has hours, before opening excel panel customer will be able to give a range of hours and when opening excel panel the panel must be able to scroll to that position where the given hour range is starting.
excel panel has a method call scrollTo(int x, int y) . but its not working. I also tried scrollBy() and setVerticalScrollbarPosition() methods and they are not working as well.