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

# workflows.SubmitSubtasks

```go theme={"system"}
workflows.SubmitSubtasks(
	ctx context.Context,
	tasks []workflows.Task,
	options ...subtask.SubmitOption,
) ([]subtask.FutureTask, error)
```

Submit multiple subtasks to the task runner. Same as [SubmitSubtask](/api-reference/go/workflows/SubmitSubtask), but accepts a list of tasks.

This function is intended to be used in tasks.

## Parameters

<ParamField path="tasks" type="[]Task">
  A list of tasks to submit
</ParamField>

<ParamField path="options" type="[]subtask.SubmitOption">
  Options for the subtasks
</ParamField>

## Options

<ParamField path="WithDependencies(dependencies ...FutureTask)">
  Set dependencies for the tasks
</ParamField>

<ParamField path="WithClusterSlug(clusterSlug string)" default="cluster of the task runner">
  Set the cluster slug of the cluster where the tasks will be executed.
</ParamField>

<ParamField path="WithMaxRetries(maxRetries int64)" default="0">
  Set the maximum number of [retries](/workflows/concepts/tasks#retry-handling) for the subtasks in case it fails
</ParamField>

<ParamField path="WithOptional()" default="false">
  Mark the subtasks as [optional](/workflows/concepts/tasks#optional-tasks). Optional subtasks will not fail the job if they fail. Tasks that depend on them will still execute even if they failed.
</ParamField>

## Returns

A list of future tasks that can be used to set dependencies between tasks.

<RequestExample>
  ```go Go theme={"system"}

  type MySubTask struct {
  	Sensor string
  	Value  float64
  }

  type Task struct{}

  func (t *Task) Execute(ctx context.Context) error {
  	err := workflows.SubmitSubtasks(ctx, 
  		[]workflows.Task{
  			&MySubTask{
  				Sensor: "A",
  				Value:  42,
  			},
  			&MySubTask{
  				Sensor: "B",
  				Value:  42,
  			}
  		},
  	)
  	if err != nil {
  		return fmt.Errorf("failed to submit subtasks: %w", err)
  	}

  	return nil
  }
  ```
</RequestExample>