DataSink: Timestamp in filename

Hi all,

In a testcase, I have a Datasink step, where I want to save data I've collected form DataSource Step and data from executed REST Request TestStep. Every time the testcase/Datasink is executed, I want a unique outputfile to be created with a timestamp in the filename:

TestCase
-> DataSource
-> REST GET Request
-> Groovy Script
-> Datasink

I wonder if it is possible to add some variable(s) to the "Out file" field of the Datasink? Any examples how to approach this?