Consider Two fields, the first contains a home address, the second a postcode (zipcode)
in the first I have 112 anywhere street west ham London. I want to return just the first part, i.e. 112
The second I want SW1X1WE. UK codes have an initial part and end in 3 characters, so remove all spaces, then regardless of length, put a space before the last three characters so I would end up with SW1X 1WE.
I want the end user to be able to see enough information to validate a home address without providing them the address
It should be possible, and I can't add functions into the server to do the donkey work