Syntax
Parameters
handle   _In_Type: XblMultiplayerSessionHandle Handle to the multiplayer session. name   _In_z_
Type: char* The name of the property to set. valueJson   _In_z_
Type: char* The JSON value to assign to the property. This must be a valid JSON string. Examples include
"\"JsonString\"", "{\"name\":\"A\"}", or "true".
