Problem/Bug Command Error

Ok So i know this aint gonna be much help but i was wondering does anybody have a soloution to where if you have a command on an item e.g. powertool on a stick and when u left click while on the ground it wont work only when you are in the air, I am running minecraft 1.8

 

You can make an addon for it, kind of.

Just replicate the powertool command, and where it does the code just put a

Code:

if(player.isFlying())
    {
            // do your powertool
    } else
    {
            // dont do powertool
    }

around it.

 

Ok maybe i forgot to also state im new in this field and i need guidence for the answer you have given me

 

You would write what Duckkly said in the config.yml file i'm pretty sure. Correct me if i'm wrong