Try to get the face value of a futures contract but fail

jonabl

pf

The right format if you want to specify params for each field is :

fields = ['CONTR_MNTH(CH=Fd RH=IN)',
          'CF_NETCHNG(CH=Fd RH=IN)',
          'CF_ASK(CH=Fd RH=IN)',
          'CF_BID(CH=Fd RH=IN)',
          'SETTLE(CH=Fd RH=IN)',
          'HST_VOL(CH=Fd RH=IN)',
          'CF_VOLUME(CH=Fd RH=IN)',
          'OPINT_1(CH=Fd RH=IN)',
          'EXPIR_DATE(CH=Fd RH=IN)',
          'ACVOL(CH=Fd RH=IN)',
          'GEN_VAL1(CH=Fd RH=IN)',
          'GEN_VAL2(CH=Fd RH=IN)',
          'GEN_VAL3(CH=Fd RH=IN)',
          'GEN_VAL4(CH=Fd RH=IN)',
          'LOT_SIZE_A(CH=Fd RH=IN)']