public function rule_between_num( $key, $value, $min, $max )
	{
		if ( !$this->rule_min_num( $key, $value, $min ) )
		{
			return false;
		}
		if ( !$this->rule_max_num( $key, $value, $max ) )
		{
			return false;
		}
		return true;
	}