I've been stuck on this for a second now, does anyone know why currentCount won't decrement by 20 if htmlButtonToBuy is pressed when currentCount is >= 20?

Tried my best to take scope into account, but I'm officially clueless.

```
const $id = document.getElementById.bind(document);
      // i know, i know. forgive me for the sin above. i should learn jQuery.
var currentCount = 0;

$id('htmlButtonForIncrementing').addEventListener("click", function(){
    currentCount++;
    $id('counter').innerHTML = currentCount;
});   // works!

$id('htmlButtonToBuy').addEventListener("click", function(){
    if (currentCount < 20){
      // irrelevant
    } if (currentCount >= 20) {
        currentCount - 20;   // doesn't work 
        $id('counter').innerHTML = currentCount;
    }
});

```

It's for a stupid clicker game I´m trying to make for myself. :)

Thanks!