Can't get the height of a wheat crop

I am trying to run a procedure that gives you a bonus when you break a fully grown wheat crop. There is no way to use all blocks for this (correct me if I'm wrong) so I used some code. However, the code does not work, and the error message states that getValue() is not a method from net.minecraft.blocks.BlockState. I tried this code in Eclipse and the error doesn't occur and it works fine there. How can I make this work in MCreator?

Code

Blocks

Error Message

Eclipse (it works here without an error)