Help with "Apply bonemeal action at x y z" (nevermind lol)

If    When right click on the whatever the bonemeal in main hand      do      Bone meal xyz 

Is that what you want

This ^ is not the correct answer. The apply bone meal action does not know how to transition a custom crop from the current stage to the next. This answer needs to stop being given out so freely, as it does nothing and is incorrect. 

Transitioning to a new crop stage could be done by getting blockstate from the plant block and increasing the stage number by one