MS Word expression

I am try to make page numbers with IF statement like this

{ IF { PAGE } > 1 "{ PAGE }" "" }

And doing all like here: http://ift.tt/1KeIUJ1

If more than one page than site numbers will show up. But i cant make it working when i press CTRL + F9 and type this command its not working. Even only { PAGE } not working but when i put this command form menu its working... what i doing wrong?? Why its not working after CTRL + F9. and Typing PAGE. I know that i can preview it by ALT + F9

Sorry for not English Screenshot

BEFORE ALT + F9: AFTER ALT + F9: