Is there a way to change a characters portrait by code?

[deepSuturn]

I'm using custom portraits to do animation in my game, each animation is its own scene. Is there a way to use the _update_portrait() function to update to another portrait that I've set on the Dialogic tab? I've tried calling the function but i don't know how to instantiate a DialogicCharater object.

@tool
extends DialogicPortrait

var ace = DialogicCharacter

func _ready() -> void:
	Dialogic.Text.text_finished.connect(_on_text_finish)

# If the custom portrait accepts a change, then accept it here
func _update_portrait(passed_character:DialogicCharacter, passed_portrait:String) -> void:
	if passed_portrait == "":
		passed_portrait = passed_character['default_portrait']

	if $AnimatedSprite2D.sprite_frames.has_animation(passed_portrait):
		$AnimatedSprite2D.play(passed_portrait)

func _on_animated_sprite_2d_animation_finished() -> void:
	$AnimatedSprite2D.frame = randi()%$AnimatedSprite2D.sprite_frames.get_frame_count($AnimatedSprite2D.animation)
	$AnimatedSprite2D.play()

func _on_text_finish(info : Dictionary):
	#Change Portrait
	
	
func _get_covered_rect() -> Rect2:
	return Rect2($AnimatedSprite2D.position, $AnimatedSprite2D.sprite_frames.get_frame_texture($AnimatedSprite2D.animation, 0).get_size()*$AnimatedSprite2D.scale)