title: Respoinse Assertions in JMeter with Jenkins - never showing a failure
body: <p>looking for a little guidance.</p>
  
  <p>I have a basic JMeter test plan setup to load a page.  I've added a couple of assertions in to check that text on screen is displayed (used response assertions for these.)  I ran the plan using the JMeter GUI and deliberately caused the assertion to fail - there was a 15% error rate - so this was good.</p>
  
  <p>I then tried to run the same plan in Jenkins using the Performance Plugin (and have updated to the latest version) however the test always returns as passed.  I have confirmed (via the console output) that the 15% error has still been seen.</p>
  
  <p>The job is currently configured with a failed % range of 0.0 to 0.0 and "Use Error thresholds on single build: " is set to 0 for failed and for unstable.</p>
  
  <p>I think I am missing something here - are any jmeter/jenkins experts able to give me a few pointers?</p>