public function setValue($value)
	{
		// any preparation goes here, for example casting to int
		$errors = $this->getValidationErrors($value);
		// if specific validation existed would go here & if
		// anything goes wrong will put error message into errors
		if(!empty($errors))
			throw $this->getContext()->getModel('ValidationException', 'Form', array(($errors)));
		return $value;
	}