Bundle in hopper to make a filter.

Apply the curse of bidding to make a bundle for new kind of redstone mechanism. It give the property to stuck in a hopper, to make a custom filter. Just one item belongs on bundle in the hopper. Others pass through the hopper. And just the item in the bundle can go in. If we have a bundle with one l zero items. They don't go in, just pass. And the others spaces of hopper belongs empty. Ready to accept more bundles put just for the player and any one other. Today if i put a full bundle, the comparator doesn't detect the quantity in it. It send me the bundle in the Inventory