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SUBMIT YOUR IDEAI'm posting my solution as a lesson to be learned. The main lesson is that my "strong arm" technique (cycling through each character) is NOT SCALEABLE - not good. For example, if the length of the Identification Number changes, a lot work is needed to 'fix' this workflow. The published solution would need just one change to the RegEx tool. And, if you're keeping score, I only used one lookup table - another example of my "strong arm" technique; which works, but is not scaleable.