RemoveItem on Custom Items?

[Thiefnuker]

Hello Folks,

We are developing a CS atm (what else?) and added a custom item: Coins
We just took the laundanum.ent, copied it, renamed it and changed the icon and SubItemName.
In a script we had the command "GiveItemFromFile("Coin" "Coin.ent");" and it worked perfectly. It added the wanted Item to the inventory.
BUT:
We can NOT remove the item anymore. (We tried "RemoveItem("Coin");")
If this line is triggered, nothing happens (No script errors).
We also tried writing it with a GiveItem command. But instead of adding a Coin that has the SubType "Health", it adds a Coin that has the SubType "Puzzle" so its not stackable :/

How can we remove those "Health" Coins? Isn't there a possibility without creating a TC?
Ty for any help!
Greetz,
Thiefnuker
Measuring
Devin