Creating an ES using the ProComp model, implementation

Dear,

I succesfully created my Enterprise Service, at least the definition part, and am now ready to implement it in SPROXY.

I'll probably just do an RFC to the R/3 system to retrieve some data and send that to the response of my Enterprise Service.

The synchronous service I have in SPROXY is (I'm presuming) the middle part after my request and before the return.

How do I go about implementing this, and how do I go about testing this?

Any guides, tips, help is much appreciated!

Thanks in advance,

Frederik-Jan