Hello, how do I get this red connection? And is it also with join instead of concatenate possible? That I join every ID from each sheet to the first sheet?
Thank you.
in case of join read the first sheet separately (instead of Table Creator on your picture), filter that sheet before loop and replace Concatenate with Joiner node.
Flow variable connection is not necessary here as flow variables are transferred to all downstream nodes regardless of connection type. For more about flow variables check this video: