表单不会使用jQuery submit（）方法提交

I need to close an iFrame after the form within the iFrame was submitted, which I got with this function:

iFrame

$('#addCommentForm').submit(function(event) {
    setTimeout(parent.closeIFrame('#popupAddComment{{ poiID }}-popup'), 500);
});

Main

function closeIFrame(iframe){
    $(iframe).remove();
    location.reload(true);
}

This works fine, even though my Chrome Browser (Version 44.0.2403.155 (64-bit)) won't wait the given time but fires the function instantly.

The problem I can't solve now is that the form will not be submitted to the PHP Symfony2 backend since I implemented the jQuery submit() method.

I did a bit of research and found a possible solution

iFrame

$('#addCommentForm').submit(function(event) {
    event.preventDefault();
    this.submit();
    setTimeout(parent.closeIFrame('#popupAddComment{{ poiID }}-popup'), 5000);
});

Sadly this won't work neither. Can somebody explain me what I'm doing wrong?