Activate Flow

The Activate Flow node triggers a specific Conversational Flow directly from within a Handler. Unlike Continue Processing (which hands off to whatever flow is currently active or determined by Core or Main flow logics), Activate Flow explicitly selects which flow to run next.

Available in: Handlers only.

When to UseCopy Anchor Link

Use Activate Flow when a Handler's pre-processing determines that a specific flow should handle the event – regardless of which flow was previously active.

Common scenarios:

• On conversation-start → Activate the Greet flow to send an opening message
• On face-detected → Activate the Greet flow to proactively greet an approaching kiosk user
• Variable-based routing → Check a variable in the Handler (e.g., GDPR consent) and activate the appropriate flow based on its value

ConfigurationCopy Anchor Link

Select FlowCopy Anchor Link

Choose which Conversational Flow to activate. The dropdown lists all flows defined in the current pipeline.

Reset Flow StackCopy Anchor Link

Controls what happens to the flow stack when the activated flow ends.

• On – the flow stack is cleared before the flow is activated. When the activated flow ends, there is nothing to return to – the conversation simply waits for the next user input, as if starting fresh.
• Off (default) – the activated flow is pushed onto the existing flow stack instead of replacing it. When it ends (via End Flow), control returns to whichever flow was on the stack before it.

BehaviorCopy Anchor Link

• The selected flow is activated immediately when this node is reached
• The Handler finishes – no Continue Processing is needed after Activate Flow
• The activated flow runs as if it had been triggered normally by user input
• Whether it starts with a clean flow stack or preserves the existing one depends on Reset Flow Stack above

Contrast with Go to FlowCopy Anchor Link

Both nodes redirect execution to another flow, but they operate in different contexts:

Typical PatternsCopy Anchor Link

Greeting on conversation start:

Signal Handler (On conversation-start)
    └──► Activate Flow (Greet)

GDPR gate in On User Input:

Text Handler Entry → On User Input
    └──► Check Variable (gdpr)
              ├── equals true ──► Continue Processing
              └── else ──► Activate Flow (GDPRConsent)

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