Hello i've created a new bizform with some fields.

So far its working fine and it can save the entered records..

but what if i want to check for duplicate records.. and dont want to continue if there is
already a record with that name.

i've tried the CustomEventHandler sample

it has the following events
Before and After Saving

i could put some code for checking in the before saving event

but how do i notify the bizform about the result of the validation?


how can i do this properly?