...
(try_begin),
(troop_slot_eq, "$g_talk_troop", slot_troop_original_faction, 0),
(party_get_slot, ":fief_culture", "$temp", slot_center_original_faction),
(troop_set_slot, "$g_talk_troop", slot_troop_original_faction, ":fief_culture"),
(try_end),
...