How can I send json Data to emit.

[PhyoeKo]

I am using latest version of adhara_socket_io,
In console log socket is connected and onConnect data is empty [].
I want to send the data with JSON format, so I tried like below

void sendMessageWithACK(String identifier) { print('$identifier | Sending ACK message...'); final msg = [ {"name": "Phyoe Ko", "room": widget.roomId, "id": 32}, ]; sockets[identifier].emitWithAck('joinRoom', [{"name": "Phyoe Ko", "room": widget.roomId, "id": 32}]).then((data) { // this callback runs when this // specific message is acknowledged by the server print('$identifier | ACK received | $msg -> $data'); }); }

but ackData is not respond anything, what's wrong with my code? Please help me!.