Использование прокси с селеном PhantomJS

Question

Я просто добавил две линии, связанные о прокси

DesiredCapabilities caps = new DesiredCapabilities(); 
caps.setJavascriptEnabled(true); 
caps.setCapability("takesScreenshot", true); 
caps.setCapability("screen-resolution", "1280x1024"); 
caps.setCapability(PhantomJSDriverService.PHANTOMJS_EXECUTABLE_PATH_PROPERTY, "C:\\Users\\USERNAME\\Downloads\\phantomjs-2.0.0-windows\\bin\\phantomjs.exe"); 
caps.setCapability("proxy", "127.0.0.1:1024"); //added this line 
caps.setCapability("proxy-type", "socks"); //and this line 
Logger.getLogger(PhantomJSDriverService.class.getName()).setLevel(Level.OFF); 

driver = new PhantomJSDriver(caps); 

Но теперь я получаю следующее сообщение об ошибке при запуске программы

[INFO - 2015-08-04T00:34:45.924Z] GhostDriver - Main - running on port 15821 
[ERROR - 2015-08-04T00:34:46.845Z] RouterReqHand - _handle.error - {"stack":"\tat _getProxySettingsFromCapabilities (:/ghostdriver/session.js:131:41)\n\tat Session (:/ghostdriver/session.js:165:62)\n\tat _postNewSessionCommand (:/ghostdriver/request_handlers/session_manager_request_handler.js:75:49)\n\tat _handle (:/ghostdriver/request_handlers/session_manager_request_handler.js:44:35)\n\tat _handle (:/ghostdriver/request_handlers/router_request_handler.js:70:37)","line":131,"sourceURL":":/ghostdriver/session.js"} 

    :262 in error 
[INFO - 2015-08-04T00:34:46.861Z] ShutdownReqHand - _handle - About to shutdown 
Aug 03, 2015 8:34:47 PM org.openqa.selenium.os.UnixProcess$SeleniumWatchDog destroyHarder 
INFO: Command failed to close cleanly. Destroying forcefully (v2). org.openqa.selenium.os.UnixProcess$SeleniumWatchDog@7e1d83ab 
org.openqa.selenium.UnsupportedCommandException: TypeError - undefined is not an object (evaluating 'proxyCapability["proxyType"].toLowerCase') 

Что я делаю не так?