Here you have nice sample which does countdown and refresh selection-screen with time value in parameter:
How to make a Timer in SAP ABAP !!!! | SAP Ignite
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1 minute on Google by the way with keyword "selection screen timer refresh"...
Here you have nice sample which does countdown and refresh selection-screen with time value in parameter:
How to make a Timer in SAP ABAP !!!! | SAP Ignite
---
1 minute on Google by the way with keyword "selection screen timer refresh"...