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Workflow activities

Last updated Mar 2, 2026

Check False

UiPath.Core.Activities.CheckFalse

Checks if a given Boolean expression is false and throws an exception with a custom message at runtime when the expression is true. This activity can be used in the Retry Scope activity.

Project Compatibility

Windows - Legacy | Windows | Cross-platform

Configuration

  • Expression - The expression to be evaluated.
  • ErrorMessage - The error message to be shown if the expression is not false.

Properties Panel

  • Private - If selected, the values of variables and arguments are no longer logged at Verbose level.
    Important:

    Only applies to Windows and Windows - Legacy projects.

Output
  • Result - A Boolean variable that stores the result of the Check action. This field supports only Boolean variables.
  • Configuration

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