how to make the attribute "dialog.response" and "dialog.response.only" work

[BuzzLEquerre]

Good evening,
I will start making the dialogues for my NPCs, and I would like to use the 'response' function in order to be able to propose several responses to the player, only I don’t understand how to use it. If someone has an idea.

I did a test on a blacksmith NPC to try to display the available answers but in the game there is nothing, and I don’t know how to do it.
the .txt :

[dialog]
topic=Talk
her=take response 1
response=test response 1 a
text=take response 2
response=test response 1 b

[dialog]
topic=Talk 2
her=take response 3
response_only=true
response=test response 2 a
her=take response 4
response=test response 2 b
her=take response 5
response=test response 2 c
set_status=access_to_the_forge

[dialog]
topic=tp forge
requires_status=access_to_the_forge

[dorkster]

The response property is supposed to reference a dialog node by id. response_only is used on the response dialog node itself to prevent it from showing up among other dialog topics. Here's an example:

[dialog]
topic=Talk
response=test_response_1
response=test_response_2
her=Choose a response

[dialog]
id=test_response_1
topic=Test Response 1
response_only=true
her=You selected response #1

[dialog]
id=test_response_2
topic=Test Response 2
response_only=true
her=You selected response #2