VBCS Tab Flow architecture.

Summary: Need Advice on building Tab Navigation using sub flows and flow container

Content (required):

I have an application with multiple flows. One flow "detail" is for displaying the details based on the item selection in the list page from another flow. The detail flow has a default start page(detail-start) that has headers and the tabs listed in oj-tab-bar(Tab: Overview, Contacts, etc.). I added a flow container and thought of developing each tab as a sub flow(flow-overview, flow-contacts, etc) and embedding them in detail using the Flow Container. However, this approach does not allow me to use the variables defined in the parent flow "detail", where i am bringing all the data for one project