# FeedbackMessagesHookType (Complex Type)

### Namespace: http://midpoint.evolveum.com/xml/ns/public/common/common-3

Item Summary
Name | Type | Multiplicity | Description
--- | --- | --- | ---
operationResultHook | property ExpressionType | [0,1] | Specifies scripting hook which can modify operation results or messages before they are shown in UI.
stackTraceVisibility | property UserInterfaceElementVisibilityType | [0,1] | Visibility for stack trace in feedback messages of GUI.

- ### Items

  - #### operationResultHook

    Flags: RAM,runtime

    Multiplicity: [0,1]

    Specifies scripting hook which can modify operation results or messages before they are shown in UI.

  - #### stackTraceVisibility

    Flags: RAM,runtime,AVals:4

    Multiplicity: [0,1]

    Visibility for stack trace in feedback messages of GUI. Relevant values are 'visible' and 'hidden'. Default value is 'visible'.