Alternate to UnitySendMessage in iOS native

Hey Guys, Currently I am working on creating a Plugin for Unity3D-iOS. I want to send data from iOS native to Unity3D. For function called from iOS native to Unity3D I need to use UnitySendMessage function. But the limitation of UnitySendMessage is that there should be some speciface GameObject there in Unity3D and it's name should be fixed and that name i have to pass in UnitySendMessage as a parameter. While in my case this solution is not suitable for me. So is there any alternate way of UnitySendMessage for sending iOS data to Unity3D ? Thanks in advance.