Using a "train" component in the main flow page not working?

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Hi,

I have a flow called "orders", within this flow I have a page orders-start, orders-detail, orders-commit. My goal is to have a train component that a user can use to navigate through the steps of the order, which will essentially just move them between orders-start,orders-detail and orders-commit.

I can get this working by adding the train component to each page, and then adding a new action flow to each page. However, it feels as though there is a better way to do this? I tried adding an action flow to the main "orders" flow and then using that action on each page. However, when defining the action at the flow level for some reason I am unable to get it to accept any parameters. When I click "Input Parameters" under the train click event nothing shows up under parameters. Creating a manual variable doesnt help either.