How do I execute a SP that returns a result with IBPP ?

the sp is:

create procedure NEW_CONN (
IP_ADDR varchar(15) character set ASCII)
returns (
CONN_ID numeric(18, 0))

whitout a returning value i can execute it like this:
st1->Prepare("EXECUTE PROCEDURE NEW_CONN '123.456.789.10'");
st1->Execute();

but I can't find a way to get the conn_id.

--
Riste Pejov
Card Management System Developer
Nacionalna Platezna Karticka
Kuzman Josifovski Pitu br.1
tel:++ 389 2 3293 826
Skopje, MKD
http://www.npk.com.mk