Javascript syntax error - moving pages

Hello, I try to add a script for movin pages in Acrobat Pro and still get a syntax error. It should take the first page of the second half of the document and put it behind the first page of the first half of the document, the second one from the second half behind the second from the first half etc.

Could someone look at the script and tell me what is wrong with it, please? Thank you.

```javascript

var doc = this;

var numPages = doc.numPages;

// Ověření, že celkový počet stránek je sudý

if (numPages % 2 !== 0) {

    console.println("Dokument musí mít sudý počet stránek.");

} else {

    var halfNumPages = Math.floor(numPages / 2);

    for (var i = 0; i < halfNumPages; i++) {

        var targetPage = (i * 2) + 1;

        doc.movePage(halfNumPages + i, targetPage);

    }

}

```