Fast Formula function-GET_BAL_COMP_VAL in Payroll Access to HR formula type always return 0

Summary

Fast Formula function-GET_BAL_COMP_VAL in Payroll Access to HR formula type always return 0

Content

I am trying to calculate Accrued hours for an employee for a pay period to populate Input values of an Payroll Element whose Primary Classification is Information. Please provide details on how to achieve this. 

When I use Fast Formula Function GET_BAL_COMP_VAL in Payroll Access to HR formula type it always return 0.
Attached are the FFs

1. Payroll Element uses Oracle Payroll Formula type-OD_I1131_ADP_User_Defined_Attr_PTO_1_FF in Status Processing rules to derive Element Input values.
2. Above Payroll Formula calls Payroll Access to HR formula-OD_I1131_GET_Accrued_Hours_FF to get Accrued hours for Start and End dates but this function always return 0. No errors are seen during the execution.