Get value of the Custom Field on a Woocommerce Product Variation

I really need some help here. I am trying to get the value of a custom field so I can compare it to the amount in stock, and display a message depending on the returned value.

The problem? No matter what I try I keep being met with boolean falsestring length 0 or Uncaught Error: Call to a member function get_meta() on boolean

Please for the love of god, how can I get the value of this custom field that is stored in the meta information of that product’s variation?

I’ve been trying for 2 days without luck! I will love you forever!