public function validate(){
		
		if(empty($this->_validators)){
			$this->_valid = true;
			return true;
		}
		
		$valid = false;
		$newValue = null;
		foreach ($this->_validators as $validator) {
			try{
				$newGeneratedValue = $validator->valideteValue($this->getVal());
				if(!$valid)
					$newValue = $newGeneratedValue;
				$valid = true;
			} catch ( \OWeb\types\UserException $ex){
				$valid = $valid || false;
				$this->_errMessages[] = $ex->getMessage();
				$this->_errDesriptions[] = $ex->getUserDescription();
			}
		}
		
		if($valid)
			$this->_trueVal = $newValue;
		else 
			$this->_trueVal = null;
		
		$this->_valid = $valid;
		
		return $valid;
	}