Validate and allow null

Hello:
I created a validation, that would check the item to make sure that no negative numbers are entered. But also if the item is left null that would be acceptable.
The problem I am having is :
Item 1 now does not accept negative numbers which is fine.
Item 1 also accepts zero as an entry.
But item one does not accept null in it. I am trying to make it accept null.
Any ideas ?
Thank You
Adel

Hi Duncan,
You can use your validation script with conditional validation.
>
BEGIN
IF NVL(TO_NUMBER(:P3_ITEM), 999) < 0
THEN
RETURN FALSE;
ELSE
RETURN TRUE;
END IF;
END;
>
Set a condition for that validation - Value in Item Expression 1 is not null and type *:P3_ITEM* in the expression one field.
Hope this helps :)
Regards,
Tajuddin
web: http://tajuddin.whitepagesbd.com

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