Here is a problem in Udacity's Object-Oriented JavaScript course that I can't seem to get past. 

Write an expression that invokes the **alerter()** function in the following array, **myArray**:

```
const myArray = [ function alerter() { alert('Hello!'); } ];

myArray[0](); //my expression

```

Even though I get what I believe to be the correct result when I run the code, the auto-grader won't accept it. Any thoughts on what's going on?