How to perform Regular Expression Check (JSU) only when field is not empty

[Preeti Yadav]

Hello,

I have a custom field called Digit in create screen. Requirement is to check if field is having only 10 digits in it. For that I have used Regular Expression Check (JSU).

But it is also checking the validations when field is empty. I need that when field is empty nothing to be checked and when it has value need to check if its having only 10 digits or not.

[Radek Dostál · Accepted solution]

Isn't the regex extended, in a sense you could do

^([0-9]{10}|)$

Where the | pipe serves as "or". I haven't tested above but I remember I set up a couple of those before. 

[Preeti Yadav]

Hi @Radek Dostál ,

Thanks! It worked.

Regards,

Preeti Yadav