Valdation and how to check Item Updated/Orignal Values

Question

I have validation "Funciton Returning Boolean" that has worked but I'm trying to add additional logic to only
update one of my form items if it's orignal value hasn't changed.
So the user can update the Account Field which will fire the validation which updates the Fund Code field.
The fund code field can also be changed, so when the Account field is changed, I don't want to change the fund code field if it's be change already by the user.
I created a hidden item "P8_ORIGNAL_FUND" that I update "P8_FUND_CODE" with a "Before Region Compulation" with the Items value.
The if statement with the Fund Code check isn't working when the Fund Code is never changed, so it appears I'm not setting the P8_ORIGNAL_FUND field I believe correctly?
(VALIDATION CODE)
Declare
OutFund Varchar2(6);
OutOrgn Varchar2(6);
OutProg Varchar2(6);
BEGIN
Apex_Validations.FRSAcct_Valid(:P8_FRS_Acct, OutFund, OutOrgn, OutProg);
If Trim(OutFund) is null Then
:P8_PAGE_FOCUS := 'P8_FRS_ACCT';
Return False;
Else
If :P8_FUND_CODE = :P8_ORIGNAL_FUND Then
:P8_FUND_code := OutFund;
End If;
:P8_ORGN_code := OutOrgn;
:P8_PROG_code := OutProg;
Return True;
End If;
END;
Edited by: SPoulos on Apr 6, 2010 9:29 AM

Answer 1

IF NVL (:New.ColName, 'appropriate NVL value) != NVL (:Old.ColName, 'appropriate NVL value') THEN...
is what you are looking for.