---
title: "Send Folder And Tree Change Event With Params Step"
slug: "send-folder-and-tree-change-event-with-params-step"
tags: ["folder event", "tree", "change event"]
updated: 2023-03-24T18:59:39Z
published: 2023-03-24T18:59:39Z
canonical: "documentation.decisions.com/send-folder-and-tree-change-event-with-params-step"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://documentation.decisions.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Send Folder And Tree Change Event With Params Step

| Step Details |
| --- |
| **Introduced in Version** | 5.0.0 |
| **Modified in Version** | 5.0.0 |
| **Location** | Dashboard Management > Events |

The **Send Folder And Tree Change Event With Params** step refreshes the entire Folder Tree, including the Folder specified in the Folder ID input, giving the option to expand the Folder in the folder tree. However, if the Folder is nested, the Parent Folder will not expand only the Folder specified in the Folder ID input expands.

---

## Properties

#### Inputs

| Property | Description | Data Type |
| --- | --- | --- |
| Do Not Expand | Determines whether the folders in the folder tree of the specified folder Id will expand when the step is executed. This option requires configuration to avoid an exception being thrown. | Boolean |
| Folder ID | The Id of the Folder | String |

#### ![](https://cdn.document360.io/6ef8bcc1-6489-4486-9ad1-83acff7e5df0/Images/Documentation/image-1674575823893.png)

---

## Common Errors

### [BusinessRule] Parameter 'doNotExpand' of 'SendFolderAndTreeChangeEventWithParams' can not be null

If the Do Not Expand option is null or not configured, the step will cause an error. To correct this, map the Do Not Expand to Constant.

#### Exception Message:

```csharp
Exception Stack Trace: DecisionsFramework.BusinessRuleException: [BusinessRule] Parameter 'doNotExpand' of 'SendFolderAndTreeChangeEventWithParams' can not be null 
at DecisionsFramework.Design.Flow.CoreSteps.InvokeMethodUtility.ThrowErrorIfNullIsNotAllowed(MethodInfo methodInfo, Object[] parameterValues, String errorMessage
 at DecisionsFramework.Design.Flow.StepImplementations.InvokeMethodStep.Run(StepStartData data
 at DecisionsFramework.Design.Flow.FlowStep.RunStepInternal(String flowTrackingID, String stepTrackingID, KeyValuePairDataStructure[] stepRunDataValues, AbstractFlowTrackingData trackingData
 at DecisionsFramework.Design.Flow.FlowStep.Start(String flowTrackingID, String stepTrackingID, FlowStateData data, AbstractFlowTrackingData trackingData, RunningStepData currentStepData)
```

## Related

- [Restart Event Broadcast Step](/restart-event-broadcast-step.md)
- [Are Events Being Broadcast Step](/are-events-being-broadcast-step.md)
- [Send Folder Change Event Step](/send-folder-change-event-step.md)
- [Send Folder Changed Event For Current Folder Step](/send-folder-changed-event-for-current-folder-step.md)
- [Send Folder Change Event For Group Step](/send-folder-change-event-for-group-step.md)
- [Send Folder Change Event For Current User Session Step](/send-folder-change-event-for-current-user-session-step.md)
- [Send Folder And Tree Change Event With Params Step](/send-folder-and-tree-change-event-with-params-step.md)