Bring your big brain here... xml and as3

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var library:XML=<library/>;
library.book = <book/>;
library.book.@bookID = 124;
library.book.(@bookID = 124).page.@pageNumber = 1; 
library.book.(@bookID = 124).page.@pageNumber = 2;
library.book.(@bookID = 124).page.@pageNumber = 3;
trace(library);
// this traces: 
//<library>
//  <book bookID="124">
//    <page pageNumber="3"/>
//  </book>
//</library>

I would like my book to have three pages… anyone with a big brain have some ideas?

Ps - trying to do it without a loop