key

sets your application's Google API key

string key;

Example

webix.ui({
    view:"geochart",
    id:"map",
    // provide your own Google API key 
    // https://developers.google.com/maps/documentation/javascript/get-api-key
    key:"AIzaSyAi0oVNVO-e603aUY8SILdD4v9bVBkmiTg",
    data:[
        {id:1, country:'Germany', area:200},
        {id:2, country:'United States', area:400},
        {id:3, country:'Brazil', area:1000},
        {id:4, country:'Canada', area:500},
        {id:5, country:'France', area:650},
        {id:6, country:'RU', area:1180}
    ]
});

Details

Please, follow the link to get Google API key for your project.