Thingsboard mqtt

Thingsboard using Mqtt protocole with arduino and wifi by esp8266 to make an iot project .
Into subscribing to thingsboard using the topic "v1/devices/me/telemetry " or "v1/devices/me/attributes" I don't receive any values after I publish to the same topic even I use a callback function.

Please if you have any information about thingsboard help me .