Hi Whitney-

To expand on this a little, in case you're not familiar with Regular Expressions, within WF you can create new tokens via Pattern Matching--which I find a bit easier to see/read--or be a little more efficient and modify the token directly as Jim did.

For Pattern Matching, your examples would be:

• Last 4 of SSN: you could get away with \d{4} meaning 4 consecutive digits, since that's the only part of the SSN where there are that many in a row. To get more precise you can append a $ which represents the end of the input string, like \d{4}$
• First 3 of a name could use the ^ to indicate the beginning of the input, as ^\w{3}

It's fairly logical, but you have to think like a computer. And it can get a bit tricky if you need something more complex. One final recommendation, especially if you need to pull different parts of an input, is to write the whole expected pattern and then put parentheses around what you want. So, for the last 4 of an SSN it could be:

\d\d\d-\d\d-(\d\d\d\d)   or shorter using the curly braces   \d{3}-\d{2}-(\d{4})