Change the rendering mode to Final Result. I would suggest you actually read the help on the effect instead of just diving in blindly...
how can i change the rendering mode to final result ?
Look in the Effects Control Panel.
If you are new to AE you must learn the basics or you will be forever lost: Basic AE
To learn how to use a new effect like Shatter type "shatter" in the search help field at the top right corner of AE and check out the community resources and tutorials. Shatter is a very complex simulation effect based on real world physics. If you don't learn the basics you won't be able to control anything.
thanks, i finally can do a shatter fx !