Manish,
Sorry, I'm new to OutSystems so I'm not sure what you mean by the json request? The request I'm sending contains some authentication information, so I'd rather not send that information. I know that makes it harder to debug, sorry.
According to what I'm reading JsonRequestBehavior appears to be a deprecated property, so maybe it's an issue with the API that I'm calling?
Thanks for your interest in looking at it.