Pro*C and trigger

Hi !

I've a big problem :(
I have a table :
table1(id INT, name CHAR(20));
I made a view on this table (due to project constraints) : view1(name)

I'd like, when users insert in view1 that the ID will be automaticaly incremented. So I use a trigger :
CREATE OR REPLACE TRIGGER trig
BEFORE INSERT ON table1
FOR EACH ROW
BEGIN
    SELECT sequence.nextval INTO :NEW.id FROM DUAL; END; No problem if I insert and create trigger manualy. But with Pro*C, it doesn't work !
It seems to be impossible to use ":" before NEW because the precompiler believes it's an host variable.
So I do :
EXEC SQL CREATE ....
BEGIN
SELECT sequence.nexval INTO NEW.id FROM DUAL; END;
END-EXEC; No problem during the creation (sqlca is ok). But when I try to insert in the view, i've the message: ORA-04098 : trigger 'TRIG' is invalid and failed revalidation

I think it's due to "NEW" but how could I do ??? Thanks for your help

--
lomba