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On Block Error not triggering "index out of range" error

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Posted on by aontanon

Hello

I have an On Block error that executes a subflow to get the last error that occurred, but I have realized that some errors are not triggered with the "On Block Error", for example, the error "index out of range" when you are trying to access to an invalid position of an array variable.

I have been reading that this is a bug of PAD, so I'm asking if someone has a workaround to solve this issue

Thanks!

Antonio

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Power Automate Desktop

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VJR 7,635 on at

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Hi @aontanon

True, this issue is for many variables in PAD that uses indexing.
You may want to upvote this feature here so that it is implemented soon in PAD.

Regarding a workaround,
At first get the count of the elements in the variable.
For eg; %MyList.Count% gives the count in my List variable called MyList.

Whenever you are using the variable with an index, make sure that the index does not exceed the above count value.
This check can be done with a simple "If" statement.
Also note that the indexes start from 0 (zero).

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aontanon 32 on at

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Hello @VJR
Thanks for your response.
yes, you can control this error with the code you are commenting on, however, the On Block Error should trigger these kinds of errors
I have another error that I don't know how to capture with code, which is "Run desktop flow", when you are calling to another flow and this flow triggers an error.

For example, if flow "idealista" has an error, the main flow triggers the error "Run desktop flow" and this error is not captured by On Error block.
This is a problem for me because I want to send an email if there is an error in the main flow.

Thanks!

Best regards,
Antonio

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VJR 7,635 on at

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Hi @aontanon

When I added as below it worked for me.
Not sure if you are looking for something different.

I have set the ErrorFlag to True if there is an error

And at the end of block if ErrorFlag is True then send out an email.

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aontanon 32 on at

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Hi @VJR
yes, you are right, I was not coding correctly.
Thanks!

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VJR 7,635 on at

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@aontanon , good to hear that its working for you now. If you think any of the above posts helped you to achieve what you wanted to then mark it as a solution and close the thread.

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