If the ID is already present in the Spreadsheet, we should prevent it from being processed. Perhaps we could implement a Filter within the 'Search ...

Thank you very much. I believe I might have a partial understanding of the situation. Are you certain your objective is to send only one email per cal...

For retrieving free/busy information from Google Calendar, have you considered using the Get Free/Busy Information module? image554×680 27.2 KB

I'm not entirely sure about the exact situation you're facing. If you could share a screenshot or the results from your execution history, it would gr...

image407×279 16.3 KB I tested this in the Set Variable module, and it functioned correctly. I'm unsure about the cause of the issue you encountered...