Guild Wars 2

I’ve just crafted this backpack and trying to put upgrade into it, but I tried all with runes, jewel (such as Ruby Orb, Exquisite Ruby Jewel), and agony infusion, but none of them work.
Can anybody help me with it please?

you need the level 65 jewel Embellished Brilliant Ruby Jewel because the backpack isn’t level 80. it also doesn’t have an agony infusion slot, so you can’t use that in there, but you can use any of the offensive/utility/Omni infusions.
http://wiki.guildwars2.com/wiki/Infusion