How to store complex data in session object

Hi All,

I have a requirement like this, I have to store some complex data(like some object) in webdynpro session object.

I know that i can store some string value in session by using wdScopeUtil and is it possible to store some complex data like(object ot object array).

See i have some ContryTO[] object which contains countrycode and value i have to store this Array object in session.How can I solve this problem,i am strucked regarding this pls help me regarding this issue.

Regards,

saleem