Hi Rafael.
Please provide us screen shot about your settings service tab.
Also as i can see your response is not a correct XML.
So you can not to get an object from this response.
Thus you can not to use mapping for this service.
And you should to parse this response manualy and do actions after manualy too.
To do it - you need to implement JS event handler for "complete" event for your service.
Regards.