Repeater Commandblock doesn't remove single items

I've got a repeater-commandblock, that should remove items from my inventory by the command "/clear @a[team=Player] double_plant 4 1".

When I'm in creative-mode an put a single item into my inventory, this item doesn't get removed.
Also, when it's a double_plant and I want to put it on the floor, the result of this placement is a only-top sunflower, instead of the flower, I wanted to place.