does this codes need to be modded

[Stanleychar]

so basically i'm making a server and i need help the code i'm making is that if someone breaks wheat it waits 5 seconds then it's replaced as grown wheat here is the code: 

on break of wheat:
    cancel drops
    set event-block to air
    give player (1 + (1 * level of fortune of player's tool)) of nether war
    set event-block to wheat
 

[PrecedingMC]

Could you explain what the issue is? (Any errors?)

Also, please ensure you're posting in the correct category. Post moved to Skript - Discussion.