How to display notification on notification bar using GCM in Unity?

Hi all
i Am using GCM plugin for notification service.

I am successfully registering device and getting toast message when getting notification but dost not getting any notification, i means notification bar does not displaying any notification when app is running ,quit or in background.

Plugin Download home page says
" By sending GCM with the defined fields, this plugin can show notification view in Android status bar (the notification will only be shown if all 3 fields are set).
ticker
content_text
content_title-"

But Don’t know how to setup this. If need to modify jar file then not able to do this.
Please help
Thanks…!

I’m having the same problem. Please help