Creation of custom program by using Function module to fetch fiscal year & period and update TVARVC variables

Hi All,

My Requirement is thatIn TVARVC Table i have to create two variables(ZYEAR,ZPERIOD),now i have to create a zprogram and by using function module 'FI_PERIOD_DETERMINE'  i have to fetch fiscal year and period and update respective TVARVC Variables.

Can any one please help me out with sample code how to close the above requirement.

Thanks,

Ram