How to get the specific property value from SOPAUI response?

The below is the answer for the above post,

/**
* Below is the Script Assertion
* Retrieves the specified header and asserts against the expected value
**/

//Change the header key as needed.
def requiredHeaderKey = 'my_client_update'

//Change the expected value for the above Header key
//Note that below one is using the regular expression to accommodate dynamic date in the header value
def expectedRequiredHeaderValue = "Arun/ten\\d{4}-\\d{2}-\\d{2}"

//You may not be required to change beyond this point of the script.

//Check if the response has headers
assert messageExchange.responseHeaders, "There are no headers in the response"

//Get & Check if the response has required Header and its value is not empty
def requiredHeaderValue = messageExchange.responseHeaders[requiredHeaderKey]
assert requiredHeaderValue, "Value of the response header ${requiredHeaderKey} is empty or null"

if (requiredHeaderValue instanceof List) {
  log.info "Requested header value is ${requiredHeaderValue[0]}"
  assert requiredHeaderValue[0] ==~ expectedRequiredHeaderValue, "Response header value is not matching with the expected value"
}

Observed similar question got answered here

http://stackoverflow.com/questions/41243397/how-to-get-the-specific-property-value-from-sopaui-response