And  this wil not work in the cases when user add/remove attachments from the attachments panel.So i was looking for an event which fires immediately when a user attaches/removes file from the attachment panel, so that the text field refreshes automatically.

Hi,The thing is i want to stop it and displays a message saying it already exist.I was thinking this should work "event.cancelAction()"

Hi Is the a way i can stop a user from attaching a document if the file name already exist within the files that are already attached.Thanks

Similiar problem.I have a form which is reader extended,when the user click save and rename the form,and then click next button,It opens a new form with the old name it was using before it was renamed and the user will be having two forms opened ,Does anyone have any idea how i can stop this .thanks