Sending new test data in body of each new setNextRequest iteration

Hey guys I have searched all over the forum but wasnt able to find the solution. Basically I use random method to generate name in one of my requests which repeats multiple times in collection. Issue is when I run the setNextRequest method it will choose the test data already generated in previous one and will not generate new variable ( which causes conflict since name already exists). Is there a way to send new data in body in each iteration of setNextRequest feature.

Thank you !

all kind of setNextRequest examples