title: Create bulk coupons using smart coupons - but compulsory for products in a certain category
body: <p>I am using <em>"<a href="https://stackoverflow.com/questions/56138586/get-a-coupon-code-dynamically-from-woocommerce-in-a-custom-function/56139512#56139512">Get a coupon code dynamically from WooCommerce in a custom function</a>"</em> answer code,
  which ensures that specific products requires a coupon code in order to complete the purchase. Really awesome. </p>
  
  <p>However I also used Woo Smart Coupons to generate coupons in bulk. I notice that even though I select the option "force specific items" this option in not checked in the coupons that are generated. </p>
  
  <p>And thus the checkout doesn't work - when the products require a coupon code. I need to have this option checked. </p>
  
  <p>How can I ensure that this option is checked by default, rather than have it selected when generating? </p>