/**
  * Interprets a string. If it starts with a { like {field:fieldname}
  * it calls TYPO3 getData function and returns its value, otherwise returns the string
  *
  * @param string $operand The operand to be interpreted
  * @param array $values The GET/POST values
  * @return string
  */
 public function parseOperand($operand, $values)
 {
     if ($operand[0] == '{') {
         $data = trim($operand, '{}');
         $returnValue = $this->globals->getcObj()->getData($data, $values);
     } else {
         $returnValue = $operand;
     }
     if ($returnValue === NULL) {
         $returnValue = '';
     }
     return $returnValue;
 }
 /**
  * Interprets a string. If it starts with a { like {field:fieldname}
  * it calls TYPO3 getData function and returns its value, otherwise returns the string
  *
  * @param string $operand The operand to be interpreted
  * @param array $values The GET/POST values
  * @return string
  */
 public static function parseOperand($operand, $values)
 {
     if ($operand[0] == '{') {
         $data = trim($operand, '{}');
         $returnValue = \Typoheads\Formhandler\Utility\Globals::getcObj()->getData($data, $values);
     } else {
         $returnValue = $operand;
     }
     if ($returnValue === NULL) {
         $returnValue = '';
     }
     return $returnValue;
 }