Where to Unlock the object

Hi All,

In FPM, where can we write the logic to Unlock the object. As the application can be directly closed from browser or user may directly navigate to other application from portal. is there any event where we can write such code.

as in webdynpro we have WDEXIT method of view or window. also we can make use of standard method APPLICATIONSTATECHANGED for same.

Please share in which interface we can get such method to resolve above mentioned problem.

Thanks In Advance,

P$G.