Programmatically generating tests

As the title implies I am attempting to programmatically generate test suites, cases and steps. My issue is at the test step level, where it requires the ability to generate an XFormDialog to fill in the test step values (HTTP status codes and the like). I receive a nullpointer exception when it attempts to generate a dialog.

Can someone point me in the direction of how to enable the XFormFactory class to function appropriately or offer a work around? I have seen the post on using [protocol]://[user]:[pass]@[path] and System properties, but do not understand where that tied into XFormFactory. So, if someone understands how that works could you please explain it for me?

Thank you,

A Green