AWS Lambda scanning a dynamoDB table
<p>Im trying to scan a dynamodb table for all entries with prices between 1 and 13,</p>

<pre><code>    var AWS = require('aws-sdk');
var db = new AWS.DynamoDB();


exports.handler = function(event, context) {

  var params = {
    TableName: "hexagon2",
    ProjectionExpression: "price", 
    FilterExpression: "price between :lower and :higher",
    ExpressionAttributeValues: {
     ":lower": {"N": "1"},
     ":higher": {"N": "13"}
    }
};

  db.scan(params, function(err, data) {
    if (err) {
      console.log(err); // an error occurred
      } 
    else {
      console.log(data.Item); // successful response
      context.done(null,{"Result": "Operation succeeded."});
      }
  });
};
</code></pre>

<p>But I always get the following error, when I test it. I definatly have 'price' as a number attribute in my table and IAM is set up too.</p>

<pre><code>START RequestId: f770c78b-93a1-11e6-b5f6-e5c31cef8b2d Version: $LATEST
2016-10-16T13:10:54.299Z    f770c78b-93a1-11e6-b5f6-e5c31cef8b2d    undefined
END RequestId: f770c78b-93a1-11e6-b5f6-e5c31cef8b2d
REPORT RequestId: f770c78b-93a1-11e6-b5f6-e5c31cef8b2d  Duration: 912.58 ms Billed Duration: 1000 ms    Memory Size: 128 MB Max Memory Used: 24 MB  
</code></pre>