firebase - Transcation updateFunction parameter is null

Question

I can't get transaction to work and need some help

I created the following db structure using the FB app dashboard: flickering-heat-528 test settings: "hello"

I can see in the dashboard that the data is there:

I then do:

var settingsRef=new Firebase('https://flickering-heat-528.firebaseio.com/test/settings');

settingsRef.transaction(function(json) {
    alert(json);
}, function(error, committed, snapshot) {
}, true);

see jsfiddle

But the alert is always 'null' why ??

Answer 1

Waitting for answers