Error while looping items

[FoxCraftGaming]

Hello, i am trying to cancel a drop event when there are to much items but i dont get it to work
This is my skript:

every 1 seconds:
    loop dropped items in radius 3 of location of {drop.1}:
        if loop-value is more than 9:
            cancel event
    drop 3 egg at {drop.1}