How to retain screen input values in HR program on BACK ?

Hi,
I have a report program in HR, using LDB "PNP" and Report category : PSSPCDOC.
After the program is executed and the report is displayed on screen, if the user clicks the BACK button (F3), the selection screen is displayed with initial values. The input values provided by the user previously get lost.
I debugged and it seems that the memory gets cleared everytime the BACK button is clicked.
But i want to retain the user inputs on the selection screen if the user clicks the BACK button because the user wants to change some selection inputs not all.
I am new to HR module, please let me know how to solve this issue.

Hi,
You can make use of SAP memeory. in the AT-SELECTION-SCREEN event, you can upload selection data in the defined memory area. Then you can make a check in the AT-SELECTION-SCREEN OUTPUT for that memory area and if that area has some data, you can show that into the screen in that event.
Thus, first time when User execute the program, that memory area would be initial. However, if user select Back after execution of selection screen, data will get loaded into the memory area and will display in the screen once again.

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How to retain screen input values in HR program on BACK ?

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