Implementing POST method in oData service on SAP HANA

Hi All,

we have standalone SAP HANA Instance, where I have already implemented a simple service :

service {

     "SIZEGRID"."sizegrid21.data.UI5::HIERARCHY_SELECTION" as "Selections"

     keys generate local "ID";

     }

Now I need to have a write/update capability added to this service (POST method).

I've been through many links how to write POST in NetWeaver environment, however, can't find any reference how to implement POST method XS Server.

Heavily appreciate any guidance/directions on this.

Thanks !