> I have use the instructions of the configuring tib_loockupcombo of
> the ibo help. When I click in the insert of a ib_updateBar an error
> is generated:
> "Fieldname: "atividades"."modalidade_id" not found.

You need to select the id field in the main dataset - as added below.

> I have 2 tables:
> Table Atividades:
> SELECT "id"
> , (select "descricao" from "modalidades" where "modalidades"."id" =
> "atividades"."modalidade_id") as "modalidade"

, "modalidade",

> , "dia"
> FROM "atividades"

Please do look at the various tutorial applications distributed with
IBO (and buying the Getting Started Guide helps a lot). Most of these
sorts of things are shown in the available documentation.

--
Geoff Worboys
Telesis Computing