Views and Rules again

Hi.

I have this rule for inserting in a view:

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te rule v_address_ins as on insert to v_address do instead
(insert into address(calle,vía,localidad,provincia) values (
NEW.calle,
get_vía(NEW.vía),
get_localidad(NEW.localidad),
get_provincia(NEW.provincia));
select currval('address_cod_seq'););
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I don't know if this is a good form. When I do an insert into v_address,
get automagically cod of tuple inserted in same operation.

Problem is that it doesn't work inside a plpgsql function. I get error:

ERROR: unexpected SELECT query in exec_stmt_execsql()

When trying selecting result of insert, I get parser error. Is there any
form of doing this?.

Thanks.

David