Crafting Recipes

Hi.

How do I change the crafting recipe of a Sugar Cane?
I want to change the item it crafts.

Something like this is not working for me.

Code:

ShapelessRecipe sR = new ShapelessRecipe(new ItemStack(Material.APPLE, 1));
sR = sR.addIngredient(Material.SUGAR_CANE);
getServer().addRecipe(sR);