JBPM Connect CommandButton to a Task Node

[c0upal]

In a process definition, I want to have a TaskNode which is completed only when the User clicks on a button on his page.  So, the process hangs on that node until it clicks on the button on his page (not the Standard Form Controller on a TaskInstanceList interface).

How do I connect it to a CommandBUtton on my own page?

[c0upal]

I'll rephrase my question..

Instead of using a tf:transitionButton for a Task node, How do you use a JSF Command Button, so I can use my existing JSF Page instead of the TaskForm generated by JBPM?