I noticed that the xml for items does not contain the item levels for the items

I'm very new to this, so forgive me if I missed something. I'm able to store cached data, but the data retrieved FROM the cache is empty. This means that the cache is always overwritten by a new armory query, even when updateInterval isn't met.

getCachedData with case "mysql" is currently:
return parent::convertXmlToArray(mysql_result($result, 0, 'cache_xml'));

maybe it should be:
$array = unserialize(mysql_result($result, 0, 'cache_xml')); return $array;

sorry but this might sound noobish, but can someone give a brief description on how to cache the data?

do i need to manually create a file under cache folder orr add any codes in my file to let it create a file to store the cache?

I have my DB connect class and want to use it to connect with phpArmoryCache.class . I see in scripts there is $mysqlString and it is used often. I don't know where to change something in scripts that I could use with my DB connect.
I want to change $mysqlString, because with it I am not able to connect to DB. Don't know why, but my DB connect works good.