How to modify JSONP header ???, Help :)

Hello guys, I have a requirement, I use "JsonP" proxy( setup a 'url' and a 'reader' ) to get the data from a WebService, then I can grab data and do debugging inside my Laptop Chrome browser( simulate device, run in "192.168.X.X" ) but now client change something, they add some auth thing inside WebService, then I HAVE TO UPLOAD my mobile app to server and run in "specified URL " for accessing the WebService, and the point is they check "Referer"( inside the JSONP request header ), but after that it's online debug( open the IOS simulator and open safari and connect to IOS current page for debugger ) which is VERY SLOW and VERY NOT CONVENIENT !!!

Then MY REQUIREMENT is How Can I Change JSONP header, set the "Referer" to the URL which they allow to access ???

I need "Referer" change from "http://ift.tt/1twIkgT" to "http://www.xxxx.yyy/"

Screen Shot 2014-10-16 at 16.10.27.jpg

How to modify JSONP header ???, Help :)