Fold to cbet size

So i have made this but not sure how to make it be specifically for a cbet.
(cnt_f_halfpotbet_def_action_fold / cnt_f_halfpotbet_def_opp) * 100
sum(if[(cash_hand_player_statistics.val_f_bet_facing_pct BETWEEN 31 and 36) and cash_hand_player_statistics.cnt_f_call = 0 and cash_hand_player_statistics.cnt_f_raise = 0 and cash_hand_player_statistics.enum_folded = 'F', 1, 0])
sum(if[cash_hand_player_statistics.val_f_bet_facing_pct BETWEEN 31 and 36, 1, 0])
(cnt_f_halfpotbet_def_action_fold / cnt_f_halfpotbet_def_opp) * 100
sum(if[(cash_hand_player_statistics.val_f_bet_facing_pct BETWEEN 31 and 36) and cash_hand_player_statistics.cnt_f_call = 0 and cash_hand_player_statistics.cnt_f_raise = 0 and cash_hand_player_statistics.enum_folded = 'F', 1, 0])
sum(if[cash_hand_player_statistics.val_f_bet_facing_pct BETWEEN 31 and 36, 1, 0])