title: Change variable from HTTP Response in JMeter
body: <p>I have a <code>GET</code> request from where I extract the variable <code>${SAMLRequest}</code> (Regular Expression Extractor). </p>
  
  <p>Value of <code>${SAMLRequest}</code> is as follows: <code>VhJUVNXeHBPRjNMdnNvNHpTUT09PC9YNTA5Q2VydGlmaWNhdGU+PC9YNTA5RGF0YT48L0tleUluZm8+PC9TaWduYXR1cmU+PHNhbWxwOk5hbWVJRFBvbGljeSBBbGxvd0NyZWF0ZT0idHJ1ZSIgLz48L3NhbWxwOkF1dGhuUmVxdWVzdD4=</code> </p>
  
  <p>Next I have a <code>POST</code> request, and I want to post the variable <code>${SAMLRequest}</code> with some changes. </p>
  
  <p>Instead of the sign <code>+</code> I want to have <code>%2B</code> and instead of <code>=</code>, I want to have <code>%3D</code>.</p>
  
  <p>Do you know how I can change a variable in JMeter?</p>