duration assertion

How to use the Duration Assertion to fail a test? The Apache JMeter Duration Assertion documentation http://jmeter.apache.org/usermanual/component_reference.html#Duration_Assertion  Definition: The Duration Assertion validates that each response is received within a given amount of time. Any response that takes longer than the given number of milliseconds (specified by the user) is recorded as a failed response. Parameter Usage Duration in milliseconds If the requests take longer than ms supplied, Sampler is considered failed Apply to Main and Sub-Samples Main SamplesRead More →