adding crate items

I'm looking for a way to have players pick up medic pacs from ammo crates, not just the field dressing ones but also the needles.

I'm planning on having the players run out of energy so the need to find some sort of serum, food, call it what you may, is needed. I can damage the health of a player on a timer and heal myself to a point where my I don't hear the heartbeat anymore, but my character is still showing a yellow abdomen, this needs to disappear completly and the only way to do this is by using a needle from a medic pack.

I can change the name of the crate to show "food" in my editor UI, but I can't seem to get the image of a pack in the game UI when I go to the weapon crate. the crate just looks empty.

Long shot but I need some help on this if anyone has a clue??