title: implementing an email and confirmation email function with angular
body: <p>i'am trying to implement a function to check email and confirmation email with angular, when i type a different confirmation email, my function work and i get an error , now when i try to correct the email and make it same as the confirmation email i still get the error even if the two emails are same</p>
  
  <p>the body of the function: </p>
  
  <pre><code>  static checkEmails(group: FormGroup): ValidationErrors | null {
      const email = group.controls.email.value;
      const confirmEmail = group.controls.confirmEmail.value;
  
      const responseKo = { NOT_SAME: true };
      const responseOk = null;
  
      let identical = false;
      if (email.toLowerCase() === confirmEmail.toLowerCase()) {
        identical = true;
      } else {
        group.controls.confirmEmail.setErrors(responseKo);
      }
  
      return identical ? responseOk : responseKo;
    }
  </code></pre>