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Apply to each Expression Evaluation Failed when building string

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Apply to each Expression Evaluation Failed when building email string

Initialize varialbes: GroupID (int), strEmailRecipient (str)

Note the GroupID is used in the () to quesry the correct sitegroups and $select Email of all members. And the HTTP requests returns green.

How the 'Parse JSON' step is configured:

Which runs successfully during test:

Here is how the 'Apply to each' is configured to build a string of email addresses:

And the error message during test:

I've tried adding ?[0]?['Email'] and error becomes:

The execution of template action 'Apply_to_each' failed: the result of the evaluation of 'foreach' expression '@{body('Parse_JSON')?['d']?['results']}?[0]?['Email']' is of type 'String'. The result must be a valid array.

Same results when I add item()? before the email in the value 'Append to string variable'.

If only there was a step to query SPO groups for emails... but La..

Thanks in advance!

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vnguyen1 40 on at

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Re: Apply to each Expression Evaluation Failed when building string

@RezaDorrani
https://powerusers.microsoft.com/t5/Using-Flows/how-to-output-string-value-out-of-json-parse/td-p/837955
i have looked into your solution for this flow issue. somehow i could not apply to my flow. do you have any suggestion ? please advice. Thanks
RezaDorrani 12,141 on at

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Re: Apply to each Expression Evaluation Failed when building string

Hi @Anonymous

Glad it worked out for you

Regards,
Reza Dorrani

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly
Community Power Pla... on at

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Re: Apply to each Expression Evaluation Failed when building string

You pointed me the right direction! And my sanity thanks you @RezaDorrani!
So I removed the parse json step.
Added the 'apply to each' directly after the 'send an http request to SharePoint' and
manually added the following to the 'select an output..' through the expression builder:

body('Send_an_HTTP_request_to_SharePoint')?['value']

then added the following to the 'append to string variable' through the expression builder:

items('Apply_to_each')?['Email']

to the value and BAM! Bob's your uncle. Works like a champ.
RezaDorrani 12,141 on at

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Re: Apply to each Expression Evaluation Failed when building string

Hi @Anonymous

After the send an http request action which returns the users within the group

Run a for loop with following expression
body('Send_an_HTTP_request_to_SharePoint')?['value']

within loop
append to string variable
item()?['Email']

Regards,
Reza Dorrani

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly