Farmland questions (growing crop planted)

I'm trying to make a slab farmland block. I figured out the tilling procedure, but cant figure out the checking of water in an area or the growing of crops planted.

I was thinking of trying the apply bonemeal effect from world management, but not sure if that is a good idea. Considering its in world management.

Figured out I needed to change the "get block at" to "get fluid as block at" like I had in the earlier if statement. leaving this here in case anybody else is interested.