CSRF Guard - Implementing it across .war files?

I have implemented CSRF Guard in one of the module of a project (aaaa.war) and it's working fine as excepted with in it. Now I have to implement the same in other modules also.

I have done the same steps in other bbbb.war file also (included csrf.jar, js file, change the web.xml and properties file) however in this case tokenfromsession is not matching because in the project there are calls from one .war file to another .war file. (might be the reason)

Any idea why I'm getting this or how can I fix this?

Is it possible to use the same implemented CSRF guard (aaaa.war) in other bbbb.war file also?

Thanks.