답변 3개
Hi Noah,Try below snippet.AND(ISNEW(),NOT(ISBLANK(Field__c)),NOT(REGEX(Field__c,"^[a-zA-Z0-9_]*$")))Review below link which has few more examples.https://help.salesforce.com/articleView?id=000334073&type=1&mode=1https://success.salesforce.com/answers?id=90630000000D7V4AAKhttp://vinaychaturvedi.com/blog/learn-regex-in-salesforce-with-examples/Hope above information was helpful.Please mark as Best Answer so that it can help others in the future.Thanks,Vinay Kumar