In the example below, we're directing expecting mothers who are pregnant with their first child from the "Registration" flow to a different flow titled "Concerns" where we will discuss their concerns surrounding their first pregnancy and complete registration.
When a Start another flow action is placed within a flow, all flow variables created up to that step may be passed to the next flow. This flow becomes a 'parent' flow. Within the 'child' flow, flow variables collected in the parent are referenced using the @parent prefix.
For example, if you collect a contact's Age (@flow.age) and Location (@flow.location) in FLOW A, then use the Start another flow action to place that contact in a new flow, FLOW B, you can reference those previously collected flow variables by calling @parent.age and @parent.location:
Note that @parent variables are only capable of referencing values from a previous flow when a contact starts a flow through either a Start another flow or Start somebody else in a flow action.