I imagine this will probably be easy for anyone versed in Regex. I just know very little about it.
I am trying to create a new entry in the "Question Regular Expressions" table, so I can use it in my Catalog Variable validation (in the "Validation Regex" field). What I need to do is to limit the entries to only allow:
- lower case letters
- underscores
They can be in any order (no pattern) and can be any length.
I found a few old community articles and documents on Regex, and thought I could do it myself, but it is not working.
Here is the expression I tried:
^[a-z]*_$
However, it seems to be rejecting basic entries that I test like "a_b".
How do I need to write this expression?
Thanks
