Woocommerce hook for order update

Question

Good morning everyone. As the title says I'm trying to fire a function when an order is updated. More specifically I want to run this function when a custom field in the order page (admin side) is changed and then saved.

I'm not looking to find out when an order is complete or when its status is updated, but just when this field is updated.

Currently I'm using woocommerce_process_shop_order_meta hook but it doesn't seem to work.

Any advice?
Thank you!

-- EDIT --

woocommerce_process_shop_order_meta is the righ hook to use, I was having an error in the function triggered by this hook so if you ever need to run a function after you click update order in the admin page this is the right way to do it.

Answer 1

As written in the edit the woocommerce_process_shop_order_meta is the right hook to use if you want to trigger a function or a response when an order is update.