@141043: It would be best to use the BoltIoT-Arduino-Helper library for this project.
The link to the library is below
The readme of the library contain steps to install the library.
For your system, you will have to write the following code in the Arduino.
Then configure your Cloud product for UART, Input, and to pull only 1 CSV value from the Bolt.
The system should start working as you want it to.