Dear Sanket,
Thanks for your immediate response. Below are the steps I performed to enable the functionality.
1. I created a elementary search help .
2. Added one field in persistent structure of the respective BO Node where I need the F4 help values dynamically and other field in the transient structure of the same node whose values is the determining criteria.
3. Assigned the search help to the field in structure.
4. As you mentioned, in the feeder class I read the field value from the first step and mapped it to the transient structure field in the BO Node.
At runtime, I was able to determine the field values in F4 Help based on the selection in first tab.
Regards,
Pradeep Ganesh