Problem with Item Validation

Question

Hello,
I am running an advanced tutorial: http://download.oracle.com/docs/cd/E14373_01/appdev.32/e13363/issue_track_ui.htm#BGBJCGIC
and I have a problem with item Validation.
Tutorial offers the following:
You must manually create another validation to ensure that the Actual End Date is the same or later then the Start Date.
To add a validation for the Actual End Date:
1.Under Page Processing, Validations, click the Create icon.
2.For Level, accept the default, Item level validation, and click Next.
3.For Item, select Project Details: 50.P3_ACTUAL_END_DATE (Actual End Date) and click Next.
4.For Validation Method:
a.Select PL/SQL and click Next.
b.Accept the default, PL/SQL Expression and click Next.
5.For Sequence and Name:
a.Sequence - Enter 50.
b.Validation Name - Enter P3_END_AFTER_START.
c.Accept the remaining defaults and click Next.
6.For Validation:
a.Validation - Enter:
to_date(:P3_ACTUAL_END_DATE,:APP_DATE_FORMAT) >= to_date
(:P3_START_DATE,:APP_DATE_FORMAT)
b.Error Message - Enter:
Actual End Date must be same or after Start Date.
c.Click Next.
7.For Conditions:
a.Condition Type - Select Value of Item in Expression 1 is NOT NULL
b.Expression 1 - Enter P3_ACTUAL_END_DATE
8.Click Create.
Is there a mistake in explanation? I did it 3 times already, very carefully! I ran the page, entered the date, which is After the Start date, and get the error message: Actual End Date must be same or After Start Date!!
Thank you for your consideration...

Answer 1

I got it solved. I don't know if this is documented(or a bug) but what I did was declare an exception and then raise it and put the form_trigger_failure into the exception handler rather than raise form_trigger_failure in the body.
declare
alreadyExists exception;
begin
-- select .....
raise alreadyExists;
exception
when alreadyExists then
message('.....exists');
raise form_trigger_failure
end;