Can Ignition Edge MQTT connect to a ICONICS HMI system via MQTT

It looks like sparkplug is not compatible with the form of JSON ICONICS likes. I was wondering if anyone else has run into this issue?

Solved: On e solution is to set MQTT Transmission to AWS greengrass. ICONICS does not like Sparkplug. Thanks.

You can also create a custom namespace and use a pure JSON string setup without any specification.

I tried that at first and it did not appear to work for ICONICS. For this to work does not ICONICS have to send out a request for a topic rather just listening for topics?