在OS X上以编程方式设置代理设置

Question

我试图在OS X 10.10上以编程方式配置代理。 scutil --proxy  显示正确的设置，系统实际使用它们，但新设置不会出现在网络首选项的代理选项卡上（在系统偏好设置中）。

 SCDynamicStoreRef dynamicStore = SCDynamicStoreCreate(NULL, CFSTR(APP_NAME), NULL, NULL);
 CFDictionaryRef ipv4key = SCDynamicStoreCopyValue(dynamicStore, CFSTR("State:/Network/Global/IPv4"));
 CFStringRef primaryServiceId = CFDictionaryGetValue(ipv4key,  CFSTR("PrimaryService"));
 CFStringRef primaryServicePath = CFStringCreateWithFormat(NULL, NULL, CFSTR("Setup:/Network/Service/%@/Proxies"), primaryServiceId);
 CFDictionaryRef proxySettings = SCDynamicStoreCopyValue(dynamicStore, primaryServicePath);
 //clone currnt values for update new values
 CFMutableDictionaryRef mutableProxySettings = CFDictionaryCreateMutableCopy(NULL, 0, proxySettings);

然后为我做的每个值     CFStringRef host = ...;

 CFDictionaryReplaceValue(mutableProxySettings, kSCPropNetProxiesHTTPProxy, host);

然后

 Boolean success = SCDynamicStoreSetValue(dynamicStore, primaryServicePath, mutableProxySettings);

设置已更新，但不会显示在代理选项卡上如何让它们出现在那里？