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Control Flow

Control flow steps allow deterministic branching, computed variables, and jumps.

if Step​

Conditional branching based on expressions.

- if: "$user.entitlements.tier == 'premium'"
  then: continue
  else:
    - goto: standard_flow

set Step​

Define computed variables that are stored in $variables.

- set:
    total_with_tax: "$variables.subtotal * 1.08"
    is_premium: "$user.entitlements.tier == 'premium'"

goto Step​

Jump to a named step.

- goto: retry-payment

A step name creates the target slug:

- action:
    name: Retry Payment
    call: payments.charge

Combining Control Flow​

journey:
  - collect: [email]
  - action: customers.lookup -> customer
    outcomes:
      found: continue
      not_found:
        - goto: new-customer
  - set:
      is_premium: "$variables.customer.tier == 'premium'"
  - if: "$variables.is_premium"
    then:
      - done: "Thanks for being premium"
    else:
      - done: "Thanks for being with us"