Property transfer return empty array in JSON response

Hello, 

I have a test step that returns a JSON response (sample response attached).  In a subsequent step, I do a property transfer in which a take the first element in the response and, in the Telecoms node, I want to grab the first element in the Telecoms array where the 'SystemCode = 'email' .  

I know this is not correct because when I use a JSON online evaluator, it will return ALL elements where SystemCode ='email' --all 25--, not just the first one it finds. 

$..Telecoms[?(@.SystemCode=="email")].ValueString

Moreover, when I run the testSuite and I look at what is returned in the Email property transfer, it returns and empty array (screenshots attached).

My questions are:

1.  What is the correct format for the Source in the property transfer so that I only get the first element in the JSON Response, and within the Telecoms node of that element, I get the first element where 'SystemCode = 'email'

2.  If I can't do this in a Property Transfer step, what is the best way to accomplish this?

2.  Am I seeing an empty array in the results email property transfer because there a limitation i in terms of the number of elements it can return in an array, and if the response returns more than it can handle, it returns an empty response?