title: how to create random username and password and save into file with Jmeter
body: <p>I want to generate random username and password and saved into csv/excel file and i want this with Jmeter ,
  could you please help me out to do this.
  i generate random email with this
  ''''
  <code>${__V(Test10${__Random(1,10000,)}@gmail.com)}</code><br />
  '''</p>
  <p>but not storing into file got error</p>