Hi Barry
Nodeeditor doesn't support the "string" type inputs/outputs.
I think it is possible to do that, but in the simplest scenario, requires adding "string" type support to nodeeditor,
Making a node to keep strings and changing other existing nodes like "idxSelect", "Concat" and "Note" to work with new string type.

I'm not sure if adding a completely new string menu and changing nodes is worthy for just one task.