RemoveItem ReplaceItem Commands

[xooGHOSToox]

Poking around in some files, I noticed this in game events..

RemoveItems - Removes the items from the player.
            items_location - The location that is affected by this. (Toolbelt, Backpack, Both, Equipment, All).
            remove_item_tag - The tag of the items you want removed.

ReplaceItems - Replaces the specified items with another item.
            items_location - The location that is affected by this. (Toolbelt, Backpack, Both, Equipment, All).
            replaced_by_item - The item that you replace the tagged items with.
            replace_item_tag - The item tag for the items that should be replaced.

Was curious about wanting to remove a certain number of items from a players inventory after completing a task.
Anyone ever use these and got them to work?

I'd like to remove 100 yuccafibers from a person's inv after they gathered them in the quests.xml file