UnitSystem.METRIC

I have this args

`
var args = {
            origin: lat1 + "," + lon1,
            destination: lat2 + "," + lon2,
            avoidHighways: false,
            avoidTolls: true,
            travelMode: 'walking',
            unitSystem: 'metric'
        };
`

but i always get Imperial whatever i put in that args
