Show busy indicator when executing OData call

Hi,

I would like to add a busy indicator when pressing on the refresh button of account list overview:

I use this code in my event:

sap.ui.core.BusyIndicator.show();
//get data:
this.service.read(path, null, this.context, false, jQuery.proxy(function(data) {  this.accountModel.setData(data);  }, this), null);
sap.ui.core.BusyIndicator.hide();

but, it doesn't work....