Post Dialog Is Initialized
Before the system fires the Post Dialog is Initialized event, the runtime structures contain these values:
BC = null (or values already passed in).
FC = null (or values already passed in).
GC = null (or values already passed in).
FI = Values passed from a calling form (if any).
PO = Values passed from POs.
This diagram illustrates the information in the runtime structures just before the system fires the Post Dialog Is Initialized event:

The Post Dialog is Initialized event is commonly used to perform these tasks:
Load filter fields that will be used for the
WHERE
clause in theSQL SELECT
statement.Load PO values into filter fields.
Perform any one-time logic for the form, such as fetching a system date.