Trim Jmeter variable value
<p>I need to Parameterize Mobile Number, which i am doing from CSV and in My next request i need to pass first 4 digit of my mobile number, so is it possible to trim variable value in jmeter so that i can pick value from csv and store that value in variable(pass in Mobile Number Field) and in next request i can trim the same variable (pick first 4 digit) and pass into next request?</p>

<p><a href="http://i.stack.imgur.com/U6Fbq.jpg" rel="nofollow">Please find the attached snapshot for the request where i need to pass only first 4 digit</a></p>