WM WF Designer connecting cancel inputs and others to stopped complete outputs


I’m currently working with WF Designer 4.6 SP1. My question:

how to connect a JButton or anything else from a panel from a task view (panel) to the stopped output of a task? How to connect something to the stopped-output at all???For it is not in the object well as for example the complete-output is.

I need the answer very fast, for I only have few more days to complete designing the whole process!

Thanks in advance for your quick answer!

PS: Why isn’t it possible to connect the cancel input of a task directly to its completed-output…