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When an event is updated I want to either delete and create a new event or update and existing one



I'm trying to figure out how to create a flow which reads when an event is updated in google Calendar, and then finds a related event and either deletes it and creates a new one, or updates the existing one.

I have tried a few different things but when ever I try and update or delete event2 it comes up with an error saying the event could not be found.


Example 1:

"Surgery 'Variable1'" event1 is updated

get event2 containing "Dispatch 'Variable1'"

Delete event

create new event3

read date event1 has been updated to add new event3 a set amount of days before


Example 2:

"Surgery 'Variable1'" event1 is updated

get event2 containing "Dispatch 'Variable1'"


Update event2

read date event1 has been updated to and update the day event2 is on.


Thanks in advance for any help

Community Support Team
Community Support Team

Re: When an event is updated I want to either delete and create a new event or update and existing o

Hi @RSAndrews94,


Could you please show a bit more about the "Surgery 'Variable1' " and the "Dispatch 'Variable1' " that you mentioned?

Could you please share a screenshot of your flow's configuration?

Further, how do you find the related event within your flow?


I suppose that you want to find the related Google calendar event whose Title has the key value Dispatch Variable1 within your flow, delete the related event and create a new event or update the existing one. Is it true?


I have made a test on my side and please take a try with the following workaround:

  • Add a "When an event is updated in calendar" trigger.
  • Add a "List the events in calendar" action, Min Time field set to following formula:




  • Add a "Apply to each", input parameter set to output of "List the events in calendar"
  • Within "Apply to each", add a Condition, left input box set to Event List Event Title dynamic content of the "List the events in calendar" action, right input box set to Dispatch Variable1.

         Within "If/yes" branch of Condition, add a "Delete an event" action and then add a "Create an event" action.


Note: The variable1 of key value "Dispatch Variable1" is not wrapped with single quotation (') on my side, if I remain the single quotation, when I click "Edit in advanced mode", the variable1 would be wrapped with double quotes automatically:19.JPG

But the variable1 that the google calendar event contains is wrapped with single quotation, so the result the Condition box evaluates would be false continuously.


The single quotation mark is the only way to wrap string literals within expressions of Microsoft Flow, you cannot use double-quotes inside expressions because this punctuation conflicts with the JSON quote that wraps the whole expression. 


Image reference:16.JPG



The flow works successfully as below:18.JPG


If you want to find the related event via condition that I provided above, please remove the single quotation which wraps the variable1.



Best regards,







Community Support Team _ Kris Dai
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
Level: Powered On

Re: When an event is updated I want to either delete and create a new event or update and existing o

Hi @v-xida-msft,


So the variable isn't really a variable defined in the flow, it is just a code which is different for each Surgery date, and then using a different flow, I have made one which creates an event replacing SURGERY with DISPATCH.example calendar flow output.JPGWhen I add an event containing SURGERY, it creates a Dispatch date a set number of days beforeAdd dates working.JPGThis is the flow which adds the eventsDelete event.JPGIn this one I'm trying to find the event which has the DISPATCH, but also has the same ending as the one which was updated

The dynamic function I'm using in the last image is this: 

Even just getting an event it gives the correct input, but it gives an error message saying it couldn't be found.
Has the correct input name.JPGFinds the correct input name, but it gives an error 404 message saying it can't be found
Using the example you suggested it still comes up with the same error messageFlow failed.JPG
It just seems odd that it has the correct input name but then can't find the event in the calendar.
Hopefully you can make some sense of what I'm trying to do
Best Wishes

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