title: Lambda Python to Query SSM Parameter Store - get value is failing
body: <p>I couldn't get the value of my parameter.</p>
  
  <p>I'm working with a <strong>lambda</strong> in Python.</p>
  
  <pre class="lang-py prettyprint-override"><code>ssm =boto3.client('ssm')
  
  def eslam(event, context):
  
  
      parameters = ssm.get_parameters(
          Names=[
              '/dev/es/ad-es-to-s3',
          ],
          WithDecryption=False
      )
  
      x = parameters.values()
      print(x)
      '''
      This print: dict_values([[{'Name': '/dev/es/ad-es-to-s3', 'Type': 'String', **'Value': "'k1':'valor1', 'k2':'valor2', 'k3':'valor3'"**, 'Version': 1, 'LastModifiedDate': datetime.datetime(2019, 10, 16, 16, 50, 38, 155000, tzinfo=tzlocal()), 'ARN': 'arn:aws:ssm:us-east-1:xxxxxxxxxx:parameter/dev/es/ad-es-to-s3'}], [], {'RequestId': 'xxxxxxxx1', 'HTTPStatusCode': 200, 'HTTPHeaders': {'x-amzn-requestid': 'xxxxxxxxxx', 'content-type': 'application/x-amz-json-1.1', 'content-length': '260', 'date': 'Wed, 16 Oct 2019 17:01:38 GMT'}, 'RetryAttempts': 0}])
      '''
  
      print(parameters)
      '''
      this print: {'Parameters': [{'Name': '/dev/es/ad-es-to-s3', 'Type': 'String', **'Value': "'k1':'valor1', 'k2':'valor2', 'k3':'valor3'"**, 'Version': 1, 'LastModifiedDate': datetime.datetime(2019, 10, 16, 16, 50, 38, 155000, tzinfo=tzlocal()), 'ARN': 'arn:aws:ssm:us-east-1:xxxxxxxxxxx:parameter/dev/es/ad-es-to-s3'}], 'InvalidParameters': [], 'ResponseMetadata': {'RequestId': 'xxxxxxxxxx', 'HTTPStatusCode': 200, 'HTTPHeaders': {'x-amzn-requestid': 'xxxxxxxxx', 'content-type': 'application/x-amz-json-1.1', 'content-length': '260', 'date': 'Wed, 16 Oct 2019 17:01:38 GMT'}, 'RetryAttempts': 0}}
      '''
     print(parameters['Parameter']['Value'])
     # this raise the error: "errorType": "KeyError"
  
     return parameters.get('Parameter', {}).get('Name')
     # this return a null value, **I want to get 'Value': "'k1':'valor1', 'k2':'valor2', 'k3':'valor3'"**
  </code></pre>