How do I connect my alexa app to dynamo db with the alexa node sdk?

I have created a lambda function that attempts to make a connection with Dynamo DB through the Alexa Skills Kit for Node according to the documentation all you need to connect to the database is

alexa.dynamoDBTableName = 'YourTableName'; // That's it!

For some reason I get the following error

User: arn:aws:sts::XXXXXXXXXXX:assumed-role/lambda_basic_dynamo/MyApp is not authorized to perform: dynamodb:GetItem on resource: arn:aws:dynamodb:us-east-1:XXXXXXXXX:table/McCannHealth"

The weird thing is that I made new roll called lambda_full_access and changed it for the skill, but it's still assuming another roll. What am I doing wrong.

via user379468