Need Help with Google Calendar Events Creation Using Make?

I’ve been trying to achieve the Creation of Google Calendar events from a Dust assistant, replacing Zapier by Make. Any experienced Make expert around here? 🙂

1.
When I send these instructions to the Make webhook as in the tutorial:

name: env.state.INPUT.name, start: env.state.INPUT.start, end: env.state.INPUT.end, guests: env.state.INPUT.guests, description: env.state.INPUT.description

1.
I parameter the Event Creation module in Make this way:

Event name: {{name}}
Start Date: {{start}}+02:00
End Date: {{end}}+2:00
Description: {{description}}
Attendees / Email: {{guests}}

And I get this error:

Missing value of required parameter ‘summary’.
Invalid date in parameter ‘start’.
Invalid date in parameter ‘end’.
Missing value of required parameter ‘email’.

13 comments

Léo Martin
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Hey Pierre Bernat Do you have an example of the output you receive in the Make Webhook you can share please ?
Léo Martin
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I've tested on my side, here is a couple of ideas :
1.
It's weird that the 4 variables are in black : If you get them directly from the webhook, they should be in a "red-ish" color or purple if you manipulate them in between.
2.
Are the dates variables in the same format as the examples in the guide ? eg., 2025-06-20T21:30:00 If not, you can use the "formatDate() formula, or even the addDate() formula (cf screen to add the 2h diff)
3.
If you have many emails in the guests, I guess split them with only a "," doesn't work. I guess you would have to create an array, that looks like sthg like this :
[ { "email": "leo.martin@malt.com", "displayName": "Léo M" }, { "email": "leo.martin@gmail.com", "displayName": "Léo" } ]
Léo Martin
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Léo Martin
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PS : What I would find useful to help is to create a test event from the Make module with variables "en dur". Then, you copy-paste the input and ask Claude to rewrite your prompt so that your assistant's output matches what's expected in the Calendar module 😉
Pierre Bernat
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Hi Léo thanks for your insights! First, I get this output in dust after I run the event. it’s cryptic to me but there may be some info in there.
🙌1
Pierre Bernat
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In Make the scenario is queued and the log is the following: { "_gl": "1*doj0zw*_gcl_au*MjgxMjA4NzEwLjE3MzQ2NDMyMDg.*_ga*NTk3NjE0MzA3LjE3MzQ2NDMyMDM.*_ga_MY0CJTCDSF*MTczOTM5Mzc2Ni45LjEuMTczOTM5NDExNC41NC4wLjA." }
Pierre Bernat
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It’s weird that the 4 variables are in black
I don’t retrieve the tags in the panel as you see in the screenshot and the animated. I input them directly as {{name}} fo i.e.
Pierre Bernat
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Are the dates variables in the same format as the examples in the guide?
Actually they are as you can see here. They’re set this way in the database schema.
Pierre Bernat
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If you have many emails in the guests, I guess split them with only a “,”
I suspected a possible problem here too, so I had simplified by passing a one and only “guest” for the moment: guests: env.state.INPUT.guests,
🙌1
Pierre Bernat
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And I’ve created an item 1 Attendee in the calendar module in Make:
Pierre Bernat
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Noted for the array tip, thank you.
Léo Martin
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Ok clearer, thanks Pierre Bernat! To retrieve the variables from the Webhook, you 1st have to :
1.
Click on the Webhook > Redetermine Data Structure > Push a test from DustApp that seems to work (seeing your output from Make)
a.
Or directly : Right click on the Webhook module > Run once > push a test from DustApp
2.
And then on the event part, to retrieve the Data from the Webhook you need to click on little star at the top left ! (cf video)
a.
In the video I don't have a webhook running so retrieving the info from the Step2, but it's the same idea!
Should work like a charm then! If not, we can take 15' if you want
Pierre Bernat
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One time I manage to run the webhook, one time to retrieve the variables, one time to create an event (when I run it separately), but never all 3 together! I’d be happy to take 15' of your time. I’ll send you a DM with availability.