如何将变量从Lambda函数传递到SSM运行命令文档

import boto3

def lambda_handler(event, context):
    # 定义需要传递的变量
    my_variable = "example_value"

    # 创建SSM客户端
    ssm_client = boto3.client('ssm')

    # 将变量传递给SSM命令文档
    response = ssm_client.send_command(
        DocumentName='AWS-RunShellScript',
        Parameters={
            'commands': [
                f'echo {my_variable}'
            ]
        }
    )

{
  "schemaVersion": "2.2",
  "description": "My SSM command document",
  "parameters": {
    "myVariable": {
      "type": "String",
      "default": "{{my_variable}}"
    }
  },
  "mainSteps": [
    {
      "action": "aws:runShellScript",
      "name": "myStep",
      "inputs": {
        "runCommand": [
          "echo {{myVariable}}"
        ]
      }
    }
  ]
}

aws ssm send-command --document-name "my-command-document" --parameters '{"myVariable":["example_value"]}' --targets "Key=tag:Name,Values=my-instance" --region us-west-2