Dispatching objects other than int,double,string etc in S4 0.3.0

[Raghavendar TS]

Hi
In S4 0.3.0 I am able to dispatch int, double, string etc.But I am not able
to dispatch objects of Instance,InstancesHeader etc.What may be the
problem.How to solve it.Do we get the same problem even if we do it in S4
piper?

Thankyou