Raphael,
Let me be sure I understand what you need to do. You have three string lists with the same number of elements and you want to combine them so that you have a recordlist with three child elements in each entry.
For example you have three string lists strList1, strList2 and strList3 which each have 10 elements and you want to create a single recordlist, recList1, that has 10 child nodes each containing three strings (one from each of the source lists).
If so, then the attached java service may get you started. You could also do this with Flow by first creating your recordlist with the right number of child elements and then looping over each string list in turn to assign the stings in each element of the record list appropriately.
In this case, I think it is more straightforward to use a java service since you only have to loop through the lists once.
Hope this helps,
Mark
#Flow-and-Java-services#webMethods#Integration-Server-and-ESB