Does xsddiagram support proxy?

[buleseli]

i do my jobs in company use proxy network.when i use xsddiagram,it appear a error like follow:

Cannot load the dependency: http://www.w3.org/2001/xml.xsd, error: System.Net.WebException: 远程服务器返回错误: (407) 需要代理身份验证。
在 System.Net.WebClient.DownloadDataInternal(Uri address, WebRequest& request)
在 System.Net.WebClient.DownloadString(Uri address)
在 XSDDiagram.Schema.LoadSchemaFromUrl(String basePath, String url, String& loadedFilename, String& baseUrl)
Cannot load the dependency: http://www.w3.org/2001/javaee_web_services_client_1_4.xsd, error: System.Net.WebException: 远程服务器返回错误: (407) 需要代理身份验证。
在 System.Net.WebClient.DownloadDataInternal(Uri address, WebRequest& request)
在 System.Net.WebClient.DownloadString(Uri address)
在 XSDDiagram.Schema.LoadSchemaFromUrl(String basePath, String url, String& loadedFilename, String& baseUrl)

so,
i want to know Does xsddiagram support proxy network?
or how can i set a config to make xsddiagram can use proxy network,tks!