Adding "MessageAttribute" to Parameters in "tasks.SqsSendMessage" for a StepFunction flow

[JugrajSingh91]

The following is the Task I want to add to a Step Function. But the class SqsSendMessage (construct) does not have a MessageAttribute variable defined.

"FailedCallResponse": {
          "Type": "Task",
          "Resource": "arn:aws:states:::sqs:sendMessage",
          "Parameters": {
              "QueueUrl": "https://sqs.us-east-1.amazonaws.com/353294000493/AWSSavingsPlanHermesFailureQueue",
              "MessageBody.$": "$.input.message",
              "MessageAttributes": {
                  "savingsPlanId": {
                      "DataType": "String",
                      "StringValue": "failedSavingsPlanId"
                  },
                  "failureCause": {
                      "DataType": "String",
                      "StringValue": "Error message recieved"
                  }
             }
          },
          "End": true
}

Do I need to create a CustomState ?

So far using the CDK constructs I have been able to do the following:

Writing this:

const failedCallResponseTask = new tasks.SqsSendMessage(this, "failedCallResponseTask", {
            queue: failedCallResponseTaskQueue,
            messageBody: sfn.TaskInput.fromJsonPathAt("$.input.message")
        });

generates the following when I see the StepFunction definition via AWS Console:

"failedCallResponseTask": {
      "End": true,
      "Type": "Task",
      "Resource": "arn:aws:states:::sqs:sendMessage",
      "Parameters": {
        "QueueUrl": "https://sqs.us-west-2.amazonaws.com/451679108822/failedCallResponseTaskQueue",
        "MessageBody.$": "$.input.message"
      }
    }