Get checkbox state from sub panel

Question

I am trying get the state of the checkbox in my animation subpanel and would like to set myBool to it's state.

Here is my code:

import bpy
import os
from bpy_extras.io_utils import ExportHelper
from bpy.props import (StringProperty, CollectionProperty, BoolProperty, EnumProperty)
from bpy.types import (Operator, OperatorFileListElement,)
import textwrap
class WorldOriginExport(Operator, ExportHelper):
    bl_label = 'Export'
    bl_idname = 'object.world_origin_export'
    bl_description = textwrap.fill('Moves each selected object to the worlds origin and exports them as a gltf separate', 80)
    bl_options = {'PRESET', 'UNDO', 'REGISTER'}
    files = CollectionProperty(name = 'File Path', type = OperatorFileListElement,)
    directory = StringProperty(subtype = 'DIR_PATH',)
    filename_ext = '.gltf'
myBool = False

@classmethod
def poll(cls, context):
    sfile = context.space_data
    operator = sfile.active_operator
    return operator.bl_idname == 'OBJECT_OT_world_origin_export'


def draw(self, context):
    layout = self.layout
    layout.use_property_split = False
    layout.use_property_decorate = False  # No animation.

    sfile = context.space_data
    operator = sfile.active_operator


def execute(self, context):
    bpy.ops.export_scene.gltf(filepath = folder_path + os.sep + sel.name)
    return {'FINISHED'}




class GltfSeparate_PT_Panel(bpy.types.Panel):
    bl_space_type = 'FILE_BROWSER'
    bl_region_type = 'TOOL_PROPS'
    bl_label = 'glTF Separate'
    bl_options = {'DEFAULT_CLOSED'}
@classmethod
def poll(cls, context):
    sfile = context.space_data
    operator = sfile.active_operator
    return operator.bl_idname == 'OBJECT_OT_world_origin_export'


def draw(self, context):
    layout = self.layout
    layout.use_property_split = True
    layout.use_property_decorate = False  # No animation.




class GltfSeparateAnimation_PT_Panel(bpy.types.Panel):
    bl_space_type = 'FILE_BROWSER'
    bl_region_type = 'TOOL_PROPS'
    bl_label = 'Animation1'
    bl_parent_id = 'GltfSeparate_PT_Panel'
    bl_options = {'DEFAULT_CLOSED'}
@classmethod
def poll(cls, context):
    sfile = context.space_data
    operator = sfile.active_operator
    return operator.bl_idname == 'OBJECT_OT_world_origin_export'


def draw(self, context):
    layout = self.layout
    layout.use_property_split = True
    layout.use_property_decorate = False  # No animation.




class GltfSeparateAnimationAnimation_PT_Panel(bpy.types.Panel):
    bl_space_type = 'FILE_BROWSER'
    bl_region_type = 'TOOL_PROPS'
    bl_label = ''
    bl_parent_id = 'GltfSeparateAnimation_PT_Panel'
    bl_options = {'DEFAULT_CLOSED'}
@classmethod
def poll(cls, context):
    sfile = context.space_data
    operator = sfile.active_operator
    return operator.bl_idname == 'OBJECT_OT_world_origin_export'


def draw(self, context):
    layout = self.layout
    layout.use_property_split = True
    layout.use_property_decorate = False  # No animation.


def draw_header(self, context):
    scene = context.scene
    self.layout.prop(scene, "use_gravity", text = 'Animation2')




def register():
    bpy.utils.register_class(WorldOriginExport)
    bpy.utils.register_class(GltfSeparate_PT_Panel)
    bpy.utils.register_class(GltfSeparateAnimation_PT_Panel)
    bpy.utils.register_class(GltfSeparateAnimationAnimation_PT_Panel)
def unregister():
    bpy.utils.unregister_class(GltfSeparateAnimationAnimation_PT_Panel)
    bpy.utils.unregister_class(GltfSeparateAnimation_PT_Panel)
    bpy.utils.unregister_class(GltfSeparate_PT_Panel)
    bpy.utils.unregister_class(WorldOriginExport)
if name == 'main':
    register()
    bpy.ops.object.world_origin_export('INVOKE_DEFAULT')