Battery indicator

Hi,

is there a way to show a battery indicator in a watch face? Or is it something I have to code from scratch?

Was trying to get battery level like this:

var stats = Sys.getSystemStats();
batteryLevel = stats(battery);

And

var batteryLevel = Sys.getSystemStats("battery");

then

var stats = Sys.getSystemStats();
var batteryLevel = stats.battery;
view.setText(batteryLevel);

What is wrong?! HELP PLS.

Ta.