Mcreator "age" procedure block not working as expected

So, I've recently begun working on a mod that requires me to check the age of crops. I want to check if a wheat crop is fully grown when destroyed, but I cannot find the error in my code that stops it from working. The F3 menu even lists the age of a fully grown wheat crop, so what's the problem here?

Here's my code:

https://photos.google.com/photo/AF1QipPgfaMuGMdJCigBwXrBp1pjYhtr5eEzVxvxNT9D

And here's the F3 menu report: 

https://photos.google.com/photo/AF1QipMu55VckLbAb8TZJ3tk_tFpajqrivzpFl7ecLaN

What is the problem here?