How to set Google Calendar Event Start & End Time Correctly?

I am creating a flow where I need to schedule an appointment in Google Calendar using date & time values from a webhook. I have successfully set the appointment_date & appointment_time, but I am unsure how to format or calculate the end_datetime correctly (e.g. adding 1 hour to start). What is the best way to do this in Make.com? Should I use Tools> Set Variable with a specific format?

Welcome to the Make community!

You can just use the “Duration” field to specify the number of hours:minutes (1:00).

If you do this, the End Date field must be empty.

Hope this helps! Let me know if there are any further questions or issues.

@samliew

P.S.: Investing some effort into the Make Academy will save you lots of time and frustration using Make.

Thanks! This is my current set up. Do you see mistakes in the syntax? I am trying to -->1. Combine the date and time 2.Parse it into a datetime object 3.Format it into ISO format