Problem about custom UI properties show on scene properties when click

Hi artists,

I am now writing some custom UI under the object panel to blender and It is almost finish.
But the problem I am facing is that when I click on and change the values of any properties on the UI
That UI properties will show up under ‘scene/custom properties’
and That makes me a big problem when I am doing exporting.

This is because of my bad coding or not?
Are there any way to prevent it or make it hidden ?

I just simply use some way like
bpy.types.Scene.NumAd_MyBool = BoolProperty(name = “”, description = “Add this property or not?”, default = True)
to create the property

It’s supposed to show under Custom Properties. options={‘HIDDEN’} does not hide it. I don’t think you can make it disappear.