[Error] Can't be added to an inventory

[sOxTw]

Hello, as I think you have already noticed, I need to randomly add items between two values, the problem is the error I get.

Skript:

options:
    # Diamond
    SinEncantar-Diamante: 1
    FortunaI-Diamante: 1 and 2
    FortunaII-Diamante: none
    FortunaIII-Diamante: none
    
# Event
on mine:
    if tool of player is enchanted with fortune 1:
        set {_cant} to random integer between {@FortunaI-Diamante}
        send "%{_cant}%" # work
        add {_cant} stone to player's inventory

Error:

[20:36:42 ERROR]: '{_cant} stone' can't be added to an inventory because the for
mer is neither an item type nor an inventory (EasiMine.sk, line 14: add {_cant}
stone to player's inventory')

Does anyone know why or how to fix it?

 

[MeHow]

add {_cant} of stone to player's inventory

Just add of before item and after amount .