Why don't you use something as simple as a CSV file loaded directly from your online server on app startup and then load the file into a list, then maniplate the lost with Regex.Split.
pack1, pack1.jpg, xxx1, yyy1
pack2, pack2jpg, xxx12, yyy2
pack3, pack3.jpg, xxx3, yyy3
pack4, pack4.jpg, xxx4, yyy4
pack5, pack5.jpg, xxx5, yyy5
pack6, pack6.jpg, xxx6, yyy6
This is just a start, obviously one of the genius boffins on here will come up with a better simpler solution. There are lots of ways for you to get to the end solution that you are after.