Currently I'm rebuilding BizTalk mappings to iway Transforms.
I need to show only 1 component of an iteration.
E.g. I only want to see the 4th iteration, or the first. The elements or attributes are not containing any unique elements, so the only unique thing is the index (iteration number).
How to solve this in transformer?

(An idea was to set an SREG each iteration, or make an invisible node which counts the iterations but maybe there is a more easy way)

Please send me your input, your expected output and an explanation of what you are trying to achieve. I would be happy to help you work through it.