How to assemble a list of PDFs in the right order?

Hi forum,

I've got a LC process where I want to assemble a dynamic number of PDFs into one single PDF. I'm using the following DDX to do this:

<DDX xmlns="http://ns.adobe.com/DDX/1.0/">  <PDF result="process:///process_data/@pdfOut">    <PDF source="process:///process_data/docList" bookmarkTitle="_SourceTitle" />  </PDF></DDX>

pdfOut -> document

docList -> list<document>

As I insert a list I would assume that the order of the subdocuments in the result is determined by the order of the source list. Unfortunately that's not the case, the assembly has a random order. When I inspect the list right before the invokation of the DDX, the order is just fine.

Any ideas why the order is gone?

Thanks in advance,

Sebastian