Hello @Gary Q ,
As I answered in a previous post, you do not need a source in your subflow.
Also, if you are using a dispatcher you should recosider using processFlow at all.
I think you can achieve what you are trying just by using 3D logic.
For this, you can connect your dispatcher as you have it and in the separator you can connect with "A" to the destination and just use the "use operator" for traveling option.
If you want to use processFlow, I would just use processFlow and not mix it with a dispatcher.
I suggest you give a look to the tutorials in the manual. Specialy the Basics tutorials and the processFlow tutorials.
