Release Line Item (FB13) is not triggering event

Hi experts,

I'm facing the following problem:

When i create a document in transaction FB60, an event "CREATED" of BOR BSEG is triggered correctly and a workitem is generated and sent to my business workplace. When i click in this workitem, the system opens the transaction FB13 with the options to "Release" or "Reject" the document. My problem is, when i click on Release ou Reject no event is generated.

I would like to know if there is any way to catch this operation?

Thanks.

Fabio