Should I not see the command showing up? I tried typing it all out in case of some kind of hidden command. Nothing. Nothing under show commands either.
Thank you for asking this question in the support community!
The Configuring Packet Capture in AOS guide and the AOS Feature Matrix - Product Feature Matrix explain that this feature was released in firmware version R10.1.0. Therefore, you would need to Upgrading Firmware in AOS to utilize this feature.
I hope that makes sense, but please do not hesitate to reply to this post with any additional questions or information. I will be happy to help in any way I can.