Releasing problem in workflow

Hi All,

I am facing the problem in the releasing of the document in the workflow..

First step i am using the parked document and save as complete, which is working fine.

But problem is next step i am using the RELEASE method of the FIPP BO..

but i am able to get the workitem with RELEASE whover i am assigning.

if they release, it is showing released, but when i check document is not released, but document getting lock..

Please let me know this is problem with wf or customizing?

I have binded Business Object corrctly for the RELEASE method

Regards,

Udupi