I should have been more clear: >Mark R>> List concatenation is more for combining two lists that might already have multiple items each. I was referring to that statement when I said >Me> Yes, but if you're dealing with records and combining lists and records this is bound to be problematic. And, I should have specified that using concatenation in combining lists and records that have multiple items is bound to be problematic. > set recordList to {} > set oneRecord to {foo:1, bar:"hello"} > set end of recordList to oneRecord > set twoRecord to {foo:2, bar:"Goodbye"} > set end of recordList to twoRecord > recordList > --->{{foo:1, bar:"hello"}, {foo:2, bar:"Goodbye"}} Yes. This is not concatenation and is exactly what Mark, Mark and I suggested. I think we have reached a consensus. ES