Crytal Reports- Cookie Problem

[donv]

Hi All.
I have been having this particular problem in my application. I call CR from Coldfusion side .I pass parameters at run time in the form of hidden varibles.These variables are being sent as a string.The report fires and when I browser back to the application,the cookie gets killed(by the CR),my session expires and it logs me out of the application.Can anyone tell me why this is happening ?I Request your help.

Thanks in advance.
Donv