Godot Engine reproduction for str2var/var2str with multi-dimensional objects

default_env.tres

[gd_resource type="Environment" load_steps=2 format=2]

[sub_resource type="ProceduralSky" id=1]

[resource]
background_mode = 2
background_sky = SubResource( 1 )

Main.gd

extends Control


func _on_Var2TextButton_pressed():
	var test = {
		"level": "one",
		"second": {
			"level": "two"
		}
	}
	
	var text = var2str(test)
	$VBoxContainer/TextEdit.text = text


func str_to_var(text: String):
	var v = str2var(text)
	return v	# Debug breakpoint here


func _on_Text2VarButton_pressed():
	str_to_var($VBoxContainer/TextEdit.text)

Main.tscn

[gd_scene load_steps=2 format=2]

[ext_resource path="res://Main.gd" type="Script" id=1]

[node name="Control" type="Control"]
anchor_right = 1.0
anchor_bottom = 1.0
script = ExtResource( 1 )

[node name="VBoxContainer" type="VBoxContainer" parent="."]
anchor_right = 1.0
anchor_bottom = 1.0

[node name="TextEdit" type="TextEdit" parent="VBoxContainer"]
margin_right = 1024.0
margin_bottom = 200.0
rect_min_size = Vector2( 0, 200 )

[node name="Var2TextButton" type="Button" parent="VBoxContainer"]
margin_top = 204.0
margin_right = 1024.0
margin_bottom = 224.0
text = "Var to text"

[node name="Text2VarButton" type="Button" parent="VBoxContainer"]
margin_top = 228.0
margin_right = 1024.0
margin_bottom = 248.0
text = "Text to var"

[connection signal="pressed" from="VBoxContainer/Var2TextButton" to="." method="_on_Var2TextButton_pressed"]
[connection signal="pressed" from="VBoxContainer/Text2VarButton" to="." method="_on_Text2VarButton_pressed"]

project.godot

; Engine configuration file.
; It's best edited using the editor UI and not directly,
; since the parameters that go here are not all obvious.
;
; Format:
;   [section] ; section goes between []
;   param=value ; assign values to parameters

config_version=4

[application]

config/name="repro"
run/main_scene="res://Main.tscn"
config/icon="res://icon.png"

[display]

window/stretch/mode="2d"
window/stretch/aspect="keep"

[gui]

common/drop_mouse_on_gui_input_disabled=true

[physics]

common/enable_pause_aware_picking=true

[rendering]

environment/default_environment="res://default_env.tres"