Fast Formula function BEN_FN_GET_CHAR_VALUE is not returning the expected value

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CHANGE_CONTEXTS(EFFECTIVE_DATE = l_eval_dt)

l_waived_flag = BEN_FN_GET_CHAR_VALUE('BEN_PRTT_ENRT_RSLT','ENROLLED',l_waive_plan)

l_end_dt_char = BEN_FN_GET_CHAR_VALUE('BEN_PRTT_ENRT_RSLT','ENRT_CVG_THRU_DT',l_waive_plan)

l_waived_flag returns 'Y' but l_end_dt_char returns 'N' instead of a date

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