Solution1
Using Dynamic Repository Variable Current_Year And Current_Date Column
Case When Year(Datecolumn)=Valueof("CURR_YEAR") Then
Quarter_Of_Year(Datecolumn) Else 4 End
Solution2
Using With Out Veriable Using Date Column In The Report
Case When Year(Datecolumn)=Year(Current_Date) Then
Quarter_Of_Year(Datecolumn) Else 2 End
Thanks
Kishore