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Replace characters in email subject

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Posted on by Mozo78

Hello,

I have to create a flow where at email receive with {} brackets in the subject, they have to be replaced with [] brackets but to not triger when there's {Support}. Let's say the email subject is {Hello there}, the {} brackets have to be replaced with [Hello there] but if it's {Support}, no action should be taken. I'm a newbie and I'm totaly lost and I'll be grateful for any help. Thanks in advance!

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bscarlavai33 752 Super User 2025 Season 2 on at

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You most likely have to use Regex which requires a third party connector - https://learn.microsoft.com/en-us/connectors/regexmatchingip/

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Mozo78 37 on at

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Thank you!
Is this a way without a third party tool?

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Mozo78 37 on at

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I put this condition but when I test it, the system says it's skipped and I don't know why:

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Sayan 818 Super User 2025 Season 2 on at

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Hey @Mozo78
Do you want to replace the subject in the email, or do you want to take the subject, replace it, and send a new email or store the subject somewhere else?

Solution for Replace subject using a variable:

Step1:

Initialize a variable with the Subject of Email.

Step2:
Initialize another variable

Step 3:
Put a condition

Step 4:

On the True side use this set variable

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If my suggestion helps you, please gives it a Thumbs up 👍 and Marks as a Solution ✔️. Which motivates to solve more problems.
Thanks,
Sayan Patra | RPA Developer

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Mozo78 37 on at

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Hello,
Subject just have to be corrected and after the {} are replaced, it have to send the mail to a certain mailbox with the corrected subject with [] brackets. If the email subject contains {Support}, it has to take no action.

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Mozo78 37 on at

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Ah, and I just saw it - the subject will never start with { or ends with }. The brackets will be somewhere in the subject text.

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Sayan 818 Super User 2025 Season 2 on at

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Hey @Mozo78
Then also this whole solution will work just you need to change the condition.

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if my suggestion helps you, please gives it a Thumbs up 👍 and Marks as a Solution ✔️. Which motivates to solve more problems.
Thanks,
Sayan Patra | RPA Developer

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Mozo78 37 on at

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Thank you very much, you're great!
I'm talking somewhat blindly for my boss is at vacation and I can't try it in the moment, accept my sincere excuses.
Will it work with my condition I posted earlier?

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Sayan 818 Super User 2025 Season 2 on at

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Hey @Mozo78
Hope the previous condition will work. When you are available just Try once. Let me know if you face any issues.

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Thanks,
Sayan Patra | RPA Developer

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Mozo78 37 on at

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Hello,
Now I can try and it gives me this error:

Flow save failed with code 'InvalidVariableInitialization' and message 'The variable action 'Replace_{}_with_[]' of type 'InitializeVariable' cannot be nested in an action of type 'Condition'.'.

The condition is this:

It gives me this error even with your example:

Here's a screenshot of the problematic component:

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