> My understanding is that outValue only needs to be called on an
> outArgument if the returned type is an NSObject.
> If the returned value is a basic data type (int, float etc) then the
> outArgument can be used without referencing the outValue.
This depends on how you use the value held by outArgument.
If a and b are outArguments, JSCocoa will be called back and outArgument's .valueOf() will automatically call the outValue.
If you have an outArgument that holds an object and you want its outValue to go in an array, or pass it to a method, … do call the outValue (or valueOf()) on it.