Cant figure out how to detect growth stage

[EliPlayz32]

Hello, I am trying to make a skript where if you right click on wheat, it gives you one wheat, and drops 1-3 seeds. I got to the point where I can right click on the wheat and trigger an event fine, but I cant make it only trigger if the wheat is fully grown. I have tried various solutions such as, "wheat:7" or, "if wheat's data/age is 7:" but none of it worked. Any way to detect crop age? Thank you, and here is my script:

on rightclick on wheat:7:
set block to wheat
drop wheat
drop a random integer between 1 and 3 of wheat seeds

Error: Can't understand this event: 'on rightclick on wheat:7'

 

[Mastriel]

Add something like this

command /testblock:
    trigger:
        message "Block: %targeted block%"

to your code, and use that to figure out the alias for that specific block (or in this case crop).