строки Фраера в названном уважаемым Comador'ом файле:

А через character_desc... функцию диалога вызвать нельзя.
Можно только через файлы дескрипшена самих диалогов. То есть config/gameplay/dialogs_...
Вызов функции (акшион) прописывается обычно в одной из фраз диалога. Структуру имеет такую:

Никаких скобок, аргументов функции в этом случае прописывать не надо. Не надо никаких расширений .script дописывать. Функция может быть вызвана из скрипта с любым названием. Теги <action> и </action> конечно же обязательны.
Для примера, диалог с Сидором из файла config/gameplay/dialogs_escape.xml. Отдаем кейс с блокпоста военных:

Акшион здесь:

Если мы откроем файл scripts/escape_dialog.script, там можно найти и вызываемую функцию give_blockpost_case:

Кстати, такая же схема используется структурой precondition. Только это уже не действие, а проверка.

[logic@smart_rab_1]
suitable = true
prior = 100
active = animpoint@mar_smart_0_0_animp_1
can_select_weapon = true

[animpoint@mar_smart_0_0_animp_1]
cover_name = mar_smart_0_0_animp_1
on_info = {=surge_started} walker@smart_0_0_ukr_1
use_camp = true
meet = meet
combat_ignore_cond = false
combat_ignore_keep_when_attacked = false
invulnerable = false
gather_items_enabled = true
help_wounded_enabled = rrue
corpse_detection_enabled = true
;_____________________________________________________________________________

[logic@smart_rab_2]
suitable = true
prior = 100
active = animpoint@mar_smart_0_0_animp_2
can_select_weapon = true

[animpoint@mar_smart_0_0_animp_2]
cover_name = mar_smart_0_0_animp_2
on_info = {=surge_started} walker@smart_0_0_ukr_2
use_camp = true
meet = meet
combat_ignore_cond = false
combat_ignore_keep_when_attacked = false
invulnerable = false
gather_items_enabled = true
help_wounded_enabled = rrue
corpse_detection_enabled = true
;_____________________________________________________________

[meet]
close_anim = nil
close_victim = nil
far_anim = nil
far_victim = nil
close_distance = 0
far_distance = 0
close_snd_distance = 3
abuse = false
use = {=actor_enemy} true
allow_break = true
meet_on_talking = true
;_____________________________________
[logic@smart_rab_3]
active = walker@smart_rab_3
suitable = true
prior = 100

[walker@smart_rab_3]
path_walk = post_1_walk
path_look = post_1_look
on_info = {=surge_started} walker@smart_0_0_ukr_3
combat_ignore_cond = false
combat_ignore_keep_when_attacked = false
invulnerable = false
gather_items_enabled = true
help_wounded_enabled = rrue
corpse_detection_enabled = true
;________________________________
[logic@smart_rab_4]
active = walker@smart_rab_4
suitable = true
prior = 100

[walker@smart_rab_4]
path_walk = post_2_walk
path_look = post_2_look
on_info = {=surge_started} walker@smart_0_0_ukr_4
combat_ignore_cond = false
combat_ignore_keep_when_attacked = false
invulnerable = false
gather_items_enabled = true
help_wounded_enabled = rrue

;________________________________________________________________

[walker@smart_0_0_ukr_1]
path_walk = surge_ukr_1_walk
path_look = surge_ukr_1_look
on_info = {=surge_complete} animpoint@mar_smart_0_0_animp_1
combat_ignore_cond = false
combat_ignore_keep_when_attacked = false
invulnerable = false
gather_items_enabled = false
help_wounded_enabled = rrue
corpse_detection_enabled = true
corpse_detection_enabled = true
;_________________________________________________________________
[walker@smart_0_0_ukr_2]
path_walk = surge_ukr_2_walk
path_look = surge_ukr_1_look
on_info = {=surge_complete} animpoint@mar_smart_0_0_animp_2
combat_ignore_cond = false
combat_ignore_keep_when_attacked = false
invulnerable = false
gather_items_enabled = false
help_wounded_enabled = rrue
corpse_detection_enabled = true
corpse_detection_enabled = true
;___________________________________________________________________
[walker@smart_0_0_ukr_3]
path_walk = surge_ukr_3_walk
path_look = surge_ukr_1_look
on_info = {=surge_complete} walker@smart_rab_3
combat_ignore_cond = false
combat_ignore_keep_when_attacked = false
invulnerable = false
gather_items_enabled = false
help_wounded_enabled = rrue
corpse_detection_enabled = true
corpse_detection_enabled = true
;_________________________________________________________

[walker@smart_0_0_ukr_4]
path_walk = surge_ukr_4_walk
path_look = surge_ukr_1_look
on_info = {=surge_complete} walker@smart_rab_4
combat_ignore_cond = false
combat_ignore_keep_when_attacked = false
invulnerable = false
gather_items_enabled = false
help_wounded_enabled = rrue
corpse_detection_enabled = true
corpse_detection_enabled = true