请问一下SOAP怎么不好使?

测试了几个网站,SOAP只能返回返回值的变量类型,而不能返回返回值,请问是怎么回事啊?@UiPath
例子:
WSDL: http://ws.cdyne.com/phoneverify/phoneverify.asmx?wsdl
method: CheckPhoneNumber
params: PhoneNumber: 7575449510
LicenseKey: F01d89fd-5155-5455-5585-e84ab8de8591