like this for example:

CREATE OR REPLACE TRIGGER TBLWCONT_AI_ROW AFTER
INSERT OR
UPDATE
ON TBLWORKINGCONTENT
FOR EACH ROW begin
if inserting then
INSERT INTO tblworkingcontentversion (idworkingcontentversion,content,IdWorkingContent,IdUser,MinorVersion, idDocument) values
(sq_tblwcontvers.nextval,:new.content,:new.idworkingcontent,:new.iduserwhocreate,1,:new.iddocument);
end if;
if UPDATING then
if :new.content<>old.content then
INSERT INTO tblworkingcontentversion (idworkingcontentversion,Content,IdWorkingContent,IdUser, idDocument) values
(sq_tblwcontvers.nextval,:new.content,:new.idworkingcontent,:new.iduserwhocreate,:new.iddocument);
end if;
end if;
end;


it gives me the same error as before can not specify this column in
update clause.

What else can I do?