Advise with RegEx validation in SP13 Nintex Form

[JamesZimmerman]

Hey

Would somebody help with my RegEx validation, please.
I am using Nintex Form in SharePoint 2013 and this is my current RegEx:

^[A-Z]{4}[.][0-9]{4}[.][0-9]{8}[.][0-9]{3}

this validates the input only if it's like: PAGB.1234.12345678.123
Due to some changes, I also need to validate this PAGB.12345.12.123

Am I right to believe that this would achieve the above requirement:

^[A-Z]{4}[.][0-9]{4|5}[.][0-9]{2|8}[.][0-9]{3}

Thank you!!

[DavidL2]

Here are some online resources you can use to troubleshoot RegEx:
https://www.regextester.com/
https://regex101.com/

[katie_chu]

Hi James,

Give this a shot:

^[A-Z]{4}[.]\d{4,5}[.]\d{2,8}[.]\d{3}

The error was because of the {4|5}. It didn't evaluate as 4 or 5 characters. Use {4,5} instead. You can also use \d in lieu of [0-9].

Let me know if this helps!