I could not see any way to push my notification to application in my ipad.
It's not entirely clear what you're trying to do. What are you trying to accomplish with push notifications?
It seems like you're trying to use your server to send a PN to an app on the iPad, which you can't do. APNS on Lion Server is to deliver notifications relating to updating/installing profiles, CalDAV, Mail, things like that...
Thanks for your reply,
Referring to the above documents,
" Additionally, the service can be configured to provide Push Notifications to third-party applications which use the ServerNotification "
This really confuse me