title: ACF Field to give specific discount to woocommerce Customer
body: <p>I'm trying to create something wonder if anyone had any ideas on how I would do it. I'm trying to build a 'Discount per customer' system into my website where the admin can enter a value (Say 20) into an Advanced Custom Field on the edit user (backend) screen which gets saved to the user meta.</p>
  
  <p>This value is then used to give a discount on the total price of their cart. e.g. if you put 20% then the customer would always get 20% off on their items. Think of it as a loyalty system.</p>
  
  <p>Would love to hear everyones ideas</p>