WebService and HTTPService components both return anonymous Objects and Arrays that are complex types. If makeObjectsBindable is true, which it is by default, Objects are wrapped in mx.utils.ObjectProxy instances and Arrays are wrapped in mx.collections.ArrayCollection instances.
Macromedia ColdFusion is case insensitive, so it internally uppercases all of its data. Keep this in mind when consuming a ColdFusion web service.
Handling results as XML with the e4x result format
Binding a service result to other objects
Handling result and fault events