Error: Unsupported type: BOOL

[GoodGuyMarco]

Why is a simple
client.scan("Employee", console.log);

giving me the error:
/src/node_modules/dynode/lib/dynode/types.js:118
throw new Error("Unsupported type: "+ type);
^
Error: Unsupported type: BOOL

My dynamoDB JSON looks like that:
{ "isPresent": { "BOOL": false }, "name": { "S": "Some Name" } }