在Soap iOS中发送服务器Api请求数组

i am using third party Exigo Api request for my app. the service says to send 2 more requests array in the body of main Soap service. Though i tried sending the 2 request in string form in the Body of the main request but i received Empty String . Help me out how should i do this . i got no solution in the manual or on any other site after googling this issue for a week i am posting this questioni am using third party Exigo Api request for my