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https://issues.apache.org/jira/browse/NIFI-6167?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Peter Turcsanyi resolved NIFI-6167.
-----------------------------------
Resolution: Invalid
> PutSlack Processor Attachments Expression Language Error
> --------------------------------------------------------
>
> Key: NIFI-6167
> URL: https://issues.apache.org/jira/browse/NIFI-6167
> Project: Apache NiFi
> Issue Type: Bug
> Components: Extensions
> Affects Versions: 1.9.0
> Reporter: Adam Fisher
> Assignee: Peter Turcsanyi
> Priority: Major
> Labels: features
> Attachments: PutSlackError.jpg
>
>
> While using *PutSlack* processor, add the following JSON payload as the
> dynamic property value for an attachment:
> {code:java}
> {
> "fallback": "A flow in Apache NiFi has failed or experienced an error.
> ${now:format('h:mm a')}",
> }
> {code}
> This produces a validation error that the JSON can not be parsed. It doesn't
> matter where the EL is placed (e.g. different JSON fields) it always
> complains about EL even though the documentation supports EL.
> !PutSlackError.jpg!
> Perhaps there a trick to embedding EL inside JSON quotes I am missing?
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