vaadin combobox valueChanged with polymer

Hi,

Im trying to implement the combobox in my polymer project.

Now everything seems to work except that the valueChanged event is firing already when the page loads for the first time and the values set.

I have here already a detailed explanation of my issue:

http://stackoverflow.com/questions/38289864/add-eventlistener-dinamically-on-vaadin-combobox-in-polymer-datatable

Hi there!

I've added a response to the Stackoverflow question. Shortly put, `value-changed` event is being fired when the parent component (`<iron-data-table>` in this case) binds a value to the `value` property of the `<vaadin-combo-box>` after the default value has been set to it. So there is an actual value change going on.

In your use case, it's better to use two-way binding instead of listening to `value-changed` events, as I've explained in my answer in Stack.