Trouble with regular expressions

#1

I have a couple of schemas where I use {{ value }} in the regex to use a previously defined value - used to work seems to have stopped and the help seems to have dissappeared for it as well?

for example - this did work

{{first_name}}.{{last_name}}@company.com

where I was using the first_name and last_name generated in the same shema

#2

Try the following as a formula

field(“first_name”) + “.” + field(“last_name”) + “@companyName.com”