Retrieving db-trigger modified items

Hello.
I'm migrating my forms from 4.5 to 6i.
I have some forms based on a table whose primary key is formed by a text code column and a number code column (sequential for the text code). For example:

Documentation table:

Cod_doc VARCHAR2(5),
Num_rev NUMBER(3),
Dat_cre DATE,
Tex_doc	LONG,

Thus, the primary key here is COD_DOC and NUM_REV. Num_rev is increased for each document when a new release of the document is issued, and I generate this num_rev from a Before insert db-trigger.
So, when the user inserts a new release of a document, I have to retrieve the num_rev in a post-forms-commit trigger, and put it into a query-only display item for he to see it. I think this is not very smart, and, during the 6i installation I think I read that this new version has an *automatic* way to do this, but I forgot where I read it. Do you know something about all this?

Thanks.

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Julio César Glez Suarez
Xixón, Asturies, Spain
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