ComboBox Data Binding with XML

Hello,

I want to use in my view xml and bind a ComboBox to a Model. The problem is, I dont know how because there is too less documantion for it.

<core:View xmlns:core="sap.ui.core" xmlns:mvc="sap.ui.core.mvc"  xmlns="sap.m" controllerName="zui5_report_xml.Master" xmlns:form="sap.ui.layout.form"  xmlns:html="http://www.w3.org/1999/xhtml">  <App>  <Page title="Example" >  <form:SimpleForm>  <Label text="Auto" />  <ComboBox text="/items">  <items>  <core:Item key="{key}" text="{text}"/>  </items>  </ComboBox>  </App></core:View>

var oModel = new sap.ui.model.json.JSONModel();  var mData = {  "items": [  {  "key": "DZ",  "text": "Algeria"  },  {  "key": "AR",  "text": "Argentina"  },  {  "key": "AU",  "text": "Australia"  }
]};
oModel.setData(mData);  this.getView().setModel(oModel);

I know, that is a simple problem but I need help for it...