How to press PageDown button in Sikuli?

Question

In my project I need to press Page Down button using Sikuli. Currently, I am using below line of code but it does not work:

screen.type(Key.PAGE_DOWN);

Answer 1

What happens if you push this button manually? Does it work? Try to do it like this:

screen.keyDown(Key.PAGE_DOWN);
Thread.sleep(500);
screen.keyUp();

Also make sure that this window is focused