# Applying Alterations

Instead of submitting alteration plans for asynchronous execution, you can apply alterations immediately using the `IAlterationRunner` service. For example:

```csharp
var alterations = new List<IAlteration>
{
    new ModifyVariable("MyVariable", "MyValue")
},

var workflowInstanceIds = new[] { "26cf02e60d4a4be7b99a8588b7ac3bb9" };
var runner = serviceProvider.GetRequiredService<IAlterationRunner>();
var results = await runner.RunAsync(plan, cancellationToken);
```

When an alteration plan is run immediately, the alterations are applied synchronously, and the results are returned. You will have to manually schedule affected workflow instances to resume execution. Use the `IAlteredWorkflowDispatcher`:

```csharp
var dispatcher = serviceProvider.GetRequiredService<IAlteredWorkflowDispatcher>();
await dispatcher.DispatchAsync(results, cancellationToken);
```

This will tell the workflow engine to pickup the altered workflow instances and run them.


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.elsaworkflows.io/features/alterations/applying-alterations.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.