Hi jitendra,
What is the problem here, if you are able to consume a webservice, which is allowed by the system-variables itself, because you take acess direct to an http(s) connection (ask the basis-guys for further informations) it's just of programming it. I'm not sure, if you are allowed, but if, you just have to declare the correct variables and go on.
Regards
Florian
PS:
Global parameters you can declare here:
File -> Form Properties ... -> Variables (tab)
