Bukkit

What steps will reproduce the problem?
1. I use the egg with left click
2.
3.

What is the expected output? What do you see instead?
I see the parachute activated message, but the parachute doesn't appear.
The fall slows down just for a second.
same effect using the helmet.

What version of the product are you using?
v0.2.1

Do you have an error log of what happened?
No error is shown in the console or in the game

Please provide any additional information below.
I tried changing the item to egg in a feather but it didn't work.
I'm sure the permissions are right.
Here's my configuration file:

fallSpeedMul: 0.4
wind: 0.3
activeTime: 0
failPossibility: 0.0
helmetTriggerAltitude: 3
material: EGG
spawn: CHICKEN
spawnOnFailure: 60
destroyAfterUse: false
msg1: Il tuo pollo si sta stancando!
msg2: Paracadute attivato.
msg3: Elmetto-Pracadute attivato!
msg4: Elmetto-Pracadute disattivato!