Token problem

	I am having problem with implementing token using tiles.When I navigate 
from my Action class to jsp then to Action Class my token is valid.It 
works fine for saveToken.
But I have a problem when I implement this using tiles.Because my 
implementation using tiles goes through Action class then
two or more jsp pages where the request object gets reset and then an 
Action class.The token is not valid and request object is set to null .
Can you please guide me regarding this?