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https://issues.apache.org/jira/browse/NIFI-8072?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mark Payne resolved NIFI-8072.
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Fix Version/s: 1.14.0
Resolution: Duplicate
> Parameters with spaces don't work within Expression Language
> ------------------------------------------------------------
>
> Key: NIFI-8072
> URL: https://issues.apache.org/jira/browse/NIFI-8072
> Project: Apache NiFi
> Issue Type: Bug
> Components: Core Framework
> Affects Versions: 1.12.1
> Reporter: Martin
> Priority: Major
> Fix For: 1.14.0
>
>
> Parameters can be used within Expression Language. E.g.
> ${attr:substringAfter(#\{param})}
> But if you have a space in the parameter name, you cannot reference it from
> within Expression Language. E.g. ${attr:substringAfter(#\{param value with
> space})} won't work
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