You need to use the boxLength
property, as mentioned in the documentation for WL.BusyIndicator.
For example, in common\main.js
:
var busy;
function wlCommonInit(){
busy = new WL.BusyIndicator ("content", {text : 'Loading Data Please Wait....', boxLength: 255.5});
busy.show();
}
P.S., There is a slight documentation issue here; I've opened a defect to correct it.