External Debugging a sap gateway service

Hi

I have created a y object based on below pfd

http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/e0d92637-3d0d-2f10-ebb2-efc1f40a85e8?QuickLink=index&overridelayout=true&53717156092624

i am able to execute and getting result for query operation but I kept an external debugpoint in ECC system ,while executing URL in gateway,debugging point i snot triggering. and i have another requirment i nee to call an function module in create_deep_entity method.How to do it.

Thanks

Vamsi