I have a custom field on an object which should allow values based on the following JavaScript REGEX.


Can anyone help me how to use this REGEX in validation rule ?

1 Answer 1


You should screen with \ such literals as \, ', " and use REGEX(text, regex_text) in validation rule's formula field.

So, for example, if you want your field match the regex, you should write the formula like this:

NOT(REGEX(CustomField__c, "[\\sa-zA-Z0-9.,:?;%/()\'!\"\"-]*"))

Explanation: add NOT(), therefore if the field matches regex it does not be caught as error condition.

Here is the link to documentation: https://help.salesforce.com/articleView?id=customize_functions_i_z.htm&type=5

  • I tried this. but now its not even allowing me to save when the value is just alphabets Commented Jul 18, 2019 at 7:58
  • 1
    [\\sa-zA-Z0-9.,:?;%/()\'!\"\"-]* Commented Jul 18, 2019 at 9:07

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