iOS 11 share extension not appear in UIActivityViewController

I use Swift 4 & XCode 9 beta 5. In ShareExtension plist, I set the NSExtensionActivationRule as followed, our app will not show in theUIActivityViewController in Photo sharing.

<key>NSExtensionAttributes</key>
<dict>
<key>NSExtensionActivationRule</key>
            <string>SUBQUERY (
                extensionItems,
                $extensionItem,
                SUBQUERY (
                $extensionItem.attachments,
                $attachment,
                ANY $attachment.registeredTypeIdentifiers UTI-CONFORMS-TO "public.image"
                ).@count >= 1
                ).@count > 0</string>
</dict>

If I change the NSExtensionActivationRule to something like this, it works well.

<key>NSExtensionActivationRule</key>
<dict>
<key>NSExtensionActivationSupportsImageWithMaxCount</key>
<integer>10</integer>
<key>NSExtensionActivationSupportsAttachmentsWithMaxCount</key>
<integer>20</integer>
</dict>

If anyone has similar issues or already knowns how to use SUBQUERY in NSExtensionActivationRule, I would be very thankful.