Change preg_match() for lowercase validation

html/typo3conf/ext/t3omy/Classes/Domain/Validator/ServersideValidator.php

@@ -134,7 +134,7 @@ class ServersideValidator extends \In2code\Femanager\Domain\Validator\Serverside
      */
     protected function checkLowerCharsValidation($user, $value, $validationSetting, $fieldName)
     {
-        if (preg_match('/[A-Z]/', $value) !== false) {
+        if (preg_match('/[A-Z]/', $value) !== 0) {
             $this->addError(ucfirst($fieldName) . ' may not contain upper case characters!', $fieldName);
             $this->isValid = false;
         }