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https://issues.apache.org/jira/browse/NIFI-6603?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17142924#comment-17142924
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Makarov Vasiliy Nicolaevich commented on NIFI-6603:
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You can cancel it by "ESC" button. But indeed there are no "cancel" button
there.
> Variables: There is no way to cancel creating a new variable unless a
> variable name is provided.
> ------------------------------------------------------------------------------------------------
>
> Key: NIFI-6603
> URL: https://issues.apache.org/jira/browse/NIFI-6603
> Project: Apache NiFi
> Issue Type: Improvement
> Components: Core UI
> Reporter: Andrew M. Lim
> Priority: Minor
>
> Open the variables window and select "+" . In the New Variable window do not
> enter a value for the Variable Name field and select "OK". A Configuration
> Error dialog is shown, select "OK". There is no way for the user to stop
> variable creation without entering a name and then selecting Cancel from the
> Variables window. We should add a "Cancel" button to the "New Variable"
> window.
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