How to i add item pocketmine.Phar

How to do i add item piston in pocketmine.Phar and more

 

Download Redstone circuit.phar from poggit dev releases

 

That plugin working but item piston nothing in inventory

 

Restart server

 

Nothing

 

Editing the PocketMine-MP.phar is very difficult as you need to know how to code because you cant just add it like that, you need to add the function of the block ect.