Add more advanced string handling functions to the String Builder data reference

Idea created by John Messinger Champion on Aug 18, 2017
    Under Review - Researching
    Originally posted on UserVoice

    I would like to use some more advanced string functions such as Split, Len (string length), and even regex filtering to allow more fine grained control of how some input strings (such as attribute values or substitution parameters) are manipulated to create a new string output.