pawajee

I have following regex validation: and getting the below error: [ERROR] InvalidRegex: Pattern value '[_a-zA-Z0-9-+]+(\.[_a-zA-Z0-9-\+]+)*@[a-zA-Z0-9-]+(\.[a-zA-Z0-9-]+)*(\.[a-zA-Z]{2,4})' is not a valid regular expression. The reported error was: ''-' is an invalid character...