Urgent........... problem in guided procedures

hi

iam creating a workflow in GP using webdynpro for java as a callable object.

Here i am facing the following three problems

1.how to initialize a process( which is not initiated )from a webdynpro application.

2.how to send an action to multiple users at same time.

3.how to send an array of values to the input parameter of the GP.

Please help me it is very urgent.

With Regards

Shanto Aloor