JMeter get the latest file / contents from SFTP folder

I am trying to use JMeter to perform an end to end test. The test involves writing to SFTP folder and reading a file generated as a result of write operation from another SFTP folder.

I am able to connect to SFTP folder using JMeter SSH SFTP plugin and able to successfully write / read SFTP folder contents.

The application under test, creates an output file based on the input file (put by JMeter). The challenge now I have is to read the contents / file which is created on the SFTP folder.

The application under test writes a file with an date-time string which JMeter may not know hence I am trying to read the latest file.

The JMeter SSH SFTP plugin provides a number of options i.e. ls, rm, rmdir, etc however, I have chosen the edit option (${sftp username@servername 'ls -ltr /server/path | tail -n 1'}) and tried to use the following in order to read the file however, I neither see error nor response.

I would appreciate any pointers and if you can think of a better solution. Please also let me know if you would like me to share more information.

Thanks in advance.