How to Read the Screen Fields after a Transaction ?

Hi all,
I am working on the Transaction 'O4K_LICENSE'. After the transaction is run, it generates an Internal License number which is displayed on the screen. I tried using 'GET PARAMETER', but as the CALL TRANSACTION is called within a loop, the SAP Global memory is not getting refreshed and iam getting the same value for every loop for the Internal License Number.
Is there any function Module other than DYNP_VALUES_READ to get the screen field values? I tried using the above function module, but in vain and it is not getting any values.
Warm Regards,
Vijay.

Well .... let me explain this very clearly.
The table OIHL has a composite primary key which is the combination of "External License Number" and "Internal License Number". The latter is generated after running the O4K_LICENSE transaction.
Moreover, iam attaching every record with a record generated in the program. Now, the same User(ERNAM) can create records having the same External License Number.
For example:
If i created a record yesterday with an external License Number 123, then say an internal lic no of 3 is assigned to it.
If i Create another record today with the same external lic no of 123, and an internal no of say 20 is attached to it, then i donot have any criterion to select the one which i have created today, as it fetches both the records.
To add to the worst, there is no timestamp field also.
Message was edited by: Vijay Sai

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How to Read the Screen Fields after a Transaction ?

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