Jdev 11.1.1.7
I have an updatable view object where i an updatable transient attribute whose value depends on one of the the columns of entity.
In SQL query it should be
DECODE(OrgId, NULL, 'false', 'true') IsExistingMapping
I created a transient attribute as:

But this filed is always populated as null.
What is the correct way to populate this field?