Stateflow's message data type problem

While studying the stateflow example, I didn't understand how the queue works, and I didn't know much about the message type.I did not find the help document of message type, I hope you could help me please。

Answer 1

[Saumya Goel]

I believe these documentation/video links might help you understand about the message and its properties:

Set Properties for a Message

Messages in State Machines