The inputChar event does not work

I have this code:

```
 36 win.on('inputChar', (onKey))
```

and then for onKey:

```
  6 function onKey (_, charCode, __) {
  7     if (charCode == nc.keys.ENTER) {
  8         if (cX > 2) {
  9             cX++;
 10             nc.refresh();
 11         }
 12     }
 13 }
```

yet, it does NOTHING, but also has no error. help?
