How to share apps folder to another dropbox user

I am developing an app that can upload and download within dropbox folder the dropbox automatically create an apps folder

my question is, how to share the folder to another dropbox user

i have tried before, it stated that the apps folder cannot be shared or can I change the coding to create the folder not in the apps folder?

Why won't my Dropbox Let me share a folder?

If you're having trouble sharing a folder, it's possible that the people you're sharing with don't have enough space to accept the invite. If you're having trouble joining a shared folder that someone invited you to, it's possible the folder is larger than the remaining available space on your account.

change final static private AccessType ACCESS_TYPE = AccessType.APP_FOLDER; to final static private AccessType ACCESS_TYPE = AccessType.DROPBOX;

if will create the folder that can share to other user