How do I get the amount of XML elements and use it in Quartz Composer?

I have a Quartz Composer document which I'm trying to edit but since this is my first dive into QC, I have little to no clue what I'm doing.
The task could be simple: There is an XML Importer and an Iterator. Now I want to use the amount of elements in the imported XML as amount of Iterations.
Can anyone help me achieve this??
Thanks,
thomas

Solution

XML Importer outputs a QC Structure. There are a few built-in operations you can perform on Structures, such as the Structure Count patch.

If you want to count the number of XML elements inside the top level, feed XML Importer into Structure Count, and feed that into Iterations.

Inside the iterator, you'll probably want to feed Index from Iterator Variables into the Structure Index Member patch, to extract one element of the Structure for each iteration.