How to parse JSON or XML in Assertions

Wow that is very slick.  I didn't know we could do right-click to generate the assertion.  Thanks!

However I would like to learn how to use Assertions script, so can you look at the script below of what's wrong with it because it does not print out all the MemberName.  I have 20 members, but it shows only 5 members printing to the output screen.

//grab the response
def responseMsg = messageExchange.response.responseContent
def parsedJson = new groovy.json.JsonSlurper().parseText(responseMsg)

//get IsSuccess
log.info parsedJson.IsSuccess

//iterate
def int count = 0;
parsedJson.each 
{ 	
	log.info parsedJson.Data[count].MemberName
	count++;
}


//also try loop, but it does not print all members
def int count = 0;
for(content in parsedJson)
{
	log.info parsedJson.Data[count].MemberName;
	count++;
}