Attaching spreadsheets an email using SendGrid

Hello @MutedJam, you are right, sorry. I have changed “read from file” to “write to file” but still is not running. I have revised again the workflow:

Set node (id=1) return values:

Set node (id=2) return values:

Set node (other ids) return values:

But Spreadsheet (Spreadsheet with list of id = 1) says “Entries exist but they do not contain any JSON data.”

and the same with Spreadsheets:

Besides SendGrid node has not input values:

and for the rest of nodes for Spreadsheets only one has output data:


What am I doing wrong?
Thank you very much for your time and help.
BR!