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Trigger Flow on Deleted Events Only

Since the When an event is added updated or deleted (V3) trigger triggers on when a calendar event is added updated or deleted you'll want to add a trigger condition so that the flow only triggers when an outlook event is deleted to do this add a Compose action and insert the Action Type dynamic content from the flow trigger.


Click on the three dots and select Peek Code. 


Highlight the input text after the @ symbol and before the closing double quote marks copy that text to your clipboard.


Click on the three dots of the flow trigger and select Settings. Scroll down to the Trigger Conditions. 

You'll need to insert an expression. Begin your expression with the @ symbol insert the equals() function.


Paste the text from clipboard into the equals function add a comma and the word deleted between single quotes.





Run a test. Add an event to your Outlook calendar. Ensure that your flow doesn't trigger when you add an event. Next delete the event you just added. Your flow should trigger. 




Compose Calendar Event ID (optional)

The next step is optional. Add a compose action. Insert the ID dynamic content from the flow trigger.



Get and Filter Items

Add a Get Items action. If possible, use a Filter Query in your Get Items action to reduce the number of items returned from your SharePoint list.


Next add a Filter Array action. Insert the value Dynamic Content from the Get Items action in the first value field. Insert the Multiline text field Dynamic Content from the Get Items action.


Change the operator to contains. In the second value field, insert the output from the Compose action that is storing the Outlook event ID. Or if you haven't added a compose action, insert the ID dynamic content from the flow trigger.



Return Item Count

Whenever I use a Filter Array action, I always like to return the count of items returned in a Compose action. This is helpful when building a flow and can also be used to troubleshoot your flow. Insert a Compose action. Add an Expression.


Use the length() function.



Select the Dynamic content tab and insert the body dynamic content from the Filter Array action into the length() function.



Run a test. Verify the Filter Array action is returning an item.


.... more to come



To learn more about how to use the Filter Array action, please refer to this YT Tutorial: Are you using the Microsoft Power Automate Filter Action wrong?


In this video tutorial I’ll show you 3 practical ways to use the Filter Array action and how to use it properly.

1️⃣ Cross-Referencing Data

2️⃣ Filtering by Key

3️⃣ Substring Matching


Did you know that the Condition action has a limit of 10 conditions? Although it might look like the Filter Array action can only accept one condition—this is not true. By using the advanced mode you can enter multiple conditions into a Filter Array action with an expression.



 3 Ways to Use the Filter Array Action

How to use the Scope Action to Group Actions

How to Check the Number of Items returned from a Filter Array Action

How to Cross-Reference Data in Excel with a SharePoint List

 How the Filter Array Action Works

 How to Access the Dynamic Content from a Filter Array Action

 How to Filter Items by a Key

How to Filter Items by Matching a Substring

How to Use Multiple Conditions in a Filter Array Action


Hope this helps!

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New Member


So i have an automation that when i add event into my outlook calendar, it should duplicate it into sharepoint calendar. If i delete an event from my outlook calendar, it should delete the event from sharepoint calendar.


Currently i can create events into calendar but if i delete then it deletes all items from sharepoint, not the only one i want to delete.

Any help?

Below is picture attached that how my flow looks like. 

OEID is multi-line text field that contains modified html code to increase font-size and color

So i take unique id from outlook -> store it as plain text -> compose new html from plain text



When i delete item it looks if action is deleted and then i try to filter array because i cannot use ODATA filter. I want it to find the modified ID that i deleted from outlook and delete sharepoint calendar event


But it finds ALL my ID's and deletes everything it finds



OEID is modified HTML


New Member

Sorry for spamming. Tried to do with your instructions and getting this error (Outputs is composed ID from your tutorial)





@asdqwerty You should run the Get Items action in the root of your flow (not in nested in the switch action). Best practice is to only run the Get Items action once in your flow. 


I believe the order of your dynamic content in the value fields of the Filter Array action needs to be switched. You need to see if the Output of your Compose action contains the dynamic content from the Get Items action.


Hope this helps!


New Member


Okay i moved Get Items action in the root of my flow



After i try to delete it again it gives me error. But it also finds my dynamic value called "OEID"

Compose ID is in the filter array value contains "outputs" <- Compose ID



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