HTTP 'PUT' request for Netweaver Gateway Service (OData) using JSON format

Hi there,

I am trying to update data using the update method of a Netweaver Gateway (OData) Service from SAPUI5 or the Gateway Client (that shouldn't matter).

So far I can only get a valid HTTP Response if I am using XML as the request body data.

Is it possible to use an HTTP request with a request body data using a JSON string instead of the XML string? If this can be done, what do I have to do before using the 'update()' method of an ODataModel object.

Best Regards

Patrick