how to use the rabbit syringe ?

Hello
I don't understand how to use the rabbit syringe.

- I changed in the config jsute this line:
Disable the item original healing": true
- I put in my console:
grantperm mysteamId doublejump.use 1m
but nothing happens when I jump.
Can you tell me step by step what to do.

On the other hand, I can't set permissions.
I tried :
Permission (Empty = not need)": "rabbit"
Permission (Empty = not need)": "rabbit.use"
"Permission (Empty = not need)": "doublejump.use"
"Permission (Empty = not need)": "doublejump"
But I still get the message:
Missing plugin name prefix 'supermedical' for permission

Thank you for your help.

The default config is just a demo, 

If you want rabbit syringe to work, you need this plugin

oh ok, thanks for your answer Ajie

Changed Status from Pending to Closed