Dear Vadim,
Thanks so much for your quick response. It worked 
Based on your experience, I appreciate if you can advise me how or where I can learn the rules of dynamic script code and script logic together, for example when I check standard SAP documentation I have not read that SELECTINPUT with SELECTİON task should be called in script logic with DIMENSION_SET command or I could not find the best documentation.
By the way, is it possible to hide the selection screen from user which is already derived from context menu and no need to shown again to user?
Have a good day, thanks again.
Songül Demir