image - iOS8 Share Extension with Dropbox Photo Integration -

I am working on a share extension and now trying to activate it within the dropbox while sharing images I am I know that Mail, FB and Twitter are in the list, though not mine. My NSExtensionActivationRule accepts NSExtensionActivationSupportsFileWithMaxCount , NSExtensionActivationSupportsWebURLWithMaxCount , NSExtensionActivationSupportsImageWithMaxCount , NSExtensionActivationSupportsAttachmentsWithMaxCount , NSExtensionActivationSupportsWebPageWithMaxCount . Any ideas?

Note: The extension works on the camera picker.