Thanks for the suggestions, I wanted to also ask if anyone knows if I could use a line separator (Or a better suggestion) instead of the "," 

I am extracting data from a JSON message into a HL7 and I am trying to identify a unique character I can use as a separator 

For example I could use the "," as the separator but it might be used as free text within the line 

e.g.

"Not  Working Example": "x, y, z, a, b, c",

essentially it could be an infinite amount of characters separated with "," within the message

This worked, thank you!