How to set variable to itself plus one through code

[creativecorvus3]

I know that in the timeline editor of Dialogic, you can do Set Value > (Value) > to itself plus > (insert number). But I am using a custom button where I intend to do the above through code. How would I do it?

So far I have tried:

Attempt 1

int(Dialogic.set_variable('story_passage', +1))

Attempt 2

onready var story_passage = int(Dialogic.get_variable('story_passage'))

func _on_Next_pressed():
story_passage += 1
int(Dialogic.set_variable('story_passage', story_passage))

Both of these attempts didn't work. I wanted to know if there is a way to do what you can in the editor but through code as I am using a button to achieve it.

I know how to achieve: Set Value to be () by doing it like this | Dialogic.set_variable('story_passage', something) but I am completely stumped on how to achieve the rest.

Set Value to be itself plus
Set Value to be itself minus
Set Value to be itself multiplied by
Set Value to be itself divided by

[creativecorvus3]

Okay, I solved the issue. It was because I wasn't saving it properly in my new scene. Here I'll post my code in case someone else has another question similar to this.

// This converts string into integer
onready var story_passage = int(Dialogic.get_variable('story_passage'))

// This will check what the number is and display the prompt (I have this match function within a process func to update constantly), you can also just have another func that will update when the variable is changed.
match story_passage:
0:
$RichTextLabel.bbcode_text = 'hello world'

// This is a button which increases the number by one and set the new value.
func _on_Next_pressed():
story_passage += 1
Dialogic.set_variable('story_passage', story_passage)