Conditional text based on number of letters in the first name

Is there a way I can have a conditional salutation based on how many letters there are in the first_name field? I've found a post that shows how to do it if there is a period but in some cases it is really just one letter that is in the field.



https://community.blackbaud.com/forums/viewtopic/1/1730?post_id=18015#p18015



Thanks,

Matt