title: Updating the value of DynamoDB table with boto3 implemented lambda function
body: <p>I am trying to achieve an update operation using my API method to update the content of the table.</p>
  <p>I have following lambda code set up:</p>
  <pre><code>def lambda_handler(event, context):
      param = event['queryStringParameters']['employeID']
       name = event['queryStringParameters']['employeName']
      dynamodb = boto3.resource('dynamodb', region_name=&quot;us-east-1&quot;)
      table = dynamodb.Table('api_demo_employe')
      
      response = table.update_item(
          Key = {
              'employeID' : param
          }
          
          )
  </code></pre>
  <p>I need to figure out how can i set the <strong>UpdateExpression,ConditionExpression,     ExpressionAttributeValues</strong> using my update variable.</p>
  <p>Could any one help me out of this?</p>