Why isn't my dialogue showing when I play the scene (using RichTextLabel and Tween)?

Question

I am using RichTextLabel for a visual novel but when I play the scene, only the visuals like background and images and text box shows, my text (dialogue) that I coded doesn't show and I'm not getting any error in my code either so I'm not sure why it isn't working.

If someone knows or has any ideas, I would appreciate it if you could help me out here. Thank you in advance!

(blob:https://mail.google.com/31767a02-507a-4110-b124-1888f0c3bab6) ~ Image

Code-----

extends Control

onready var text = getparent().getnode("Dialogue").dialogue_1

var dialogue_index = 0
var finished
var active

var position
var expression

func ready():
loaddialogue()

warning-ignore:unused_argument

func phyysicsprocess(delta):
if active:

        if Input.is_action_just_pressed("ui_accept"):
            if finished == true:
                load_dialogue()
            else:
                $TextBox/Tween.stop_all()
                $TextBox/RichTextLabel.percent_visible = 1
                finished = true

func loaddialogue():
if dialogueindex < text.size():
active = true
finished = false

    $TextBox.visible = true
    $TextBox/RichTextLabel.bbcode_text = text[dialogue_index]["Text"]
    $TextBox/Label.text = text[dialogue_index]["Name"]

    position = text[dialogue_index]["Position"]

    $TextBox/RichTextLabel.percent_visible = 0
    $TextBox/Tween.interpolate_property(
        $TextBox/RichTextLabel, "percent_visible", 0, 1, 2,
        Tween.TRANS_LINEAR, Tween.EASE_IN_OUT
    )
    $TextBox/Tween.start()
else:
    $TextBox.visible = false
    finished = true
    active = false
dialogue_index += 1

func onTweentweencompleted(object, key):
finished = true