Panel title followed by a dropdown [Indesign scripting]
I am trying to create a panel with a title and followed by a dropdown as the following image:

Currently I have the following code, but the dropdown is inside de panel:
var w = new Window('palette', "My palette");
var pageSizePanel = w.add('panel', undefined, 'Page Size', {
borderStyle: 'gray'
});
pageSizePanel.alignment = ["fill", "fill"];
var dropdown = pageSizePanel.add("dropdownlist", undefined, ['1','2']);
dropdown.selection = 1;
Which produces this result:

Anyone can help please?
Thanks in advance!