Database Item null in oracle payroll Fast formula

I am creating a Oracle Payroll Fast Formula to retrieve the PTO_ACCRUAL_PLAN_ID and PTO_DATE_PAID_START_DATE however the values  being returned are the defaults.

Please assist.

/* -------------------------------------------------------

FORMULA : NCB_BASIC_VACATION_PLAN_FY_ORACLE_PAYROLL

    This formula is a top level formula called during the payroll

    run to calculate accrued time for the payroll period.

    It derives the necessary values, and then runs the appropriate

    pto formulae.

    It also contains an example (commented out) of one method

    of calculating the change in employer liability for PTO.

    Please see the on-line user documentation for more

    information.