Logic blocks control the flow — branching, variable assignment, redirects, custom scripts, delays, jumps, and A/B testing. They do not display content to the user directly.
Set Variable
Creates or updates a flow variable with a computed or static value. Supports many assignment types — dates, random IDs, expressions, list operations, and more.
How to use
Drag Set Variable onto the canvas, select the target variable, and choose the assignment type.
Configuration
| Field | Description |
|---|---|
| Variable | The variable to create or update. |
| Type | How the value is computed. See assignment types below. |
| Expression / Value | The value or expression to assign (fields vary by type). |
Assignment types
| Type | Description |
|---|---|
| Custom | Assign a static value or {{expression}}. |
| Empty | Clear the variable. |
| Today | Current date. |
| Now | Current date and time. |
| Yesterday / Tomorrow | Date relative to today. |
| Random ID | Short random identifier. |
| Random UUID | Full UUID v4. |
| Transcript | Full conversation transcript up to this point. |
| Chat History | Conversation history as structured data. |
| User ID / Session ID / Result ID | Platform-assigned identifiers. |
| Pop / Shift | Remove and assign the last or first item from a list variable. |
| Append value(s) | Add value(s) to a list variable. |
| Map item with same index | Look up a value from one list at the index matching an item in another list. |
Condition
Branches the flow based on one or more logical comparisons. Routes to different paths depending on whether the combined condition is true or false.
How to use
Drag Condition onto the canvas. Configure one or more comparison rows and connect the If true and If false paths to different blocks.
Configuration
Each condition row has:
| Field | Description |
|---|---|
| Variable | The variable to evaluate. |
| Operator | Comparison operator: Equal to, Not equal to, Contains, Does not contain, Starts with, Ends with, Is set, Is empty, Is greater than, Is less than, Matches regex, etc. |
| Value | The value to compare against. |
Multiple rows are combined with a logical operator (AND / OR) at the group level.
Redirect
Sends the user’s browser to an external URL. This is typically the last block in a group since it navigates away from the chatbot.
Configuration
| Field | Description |
|---|---|
| URL | The URL to redirect the user to. Supports {{variable}} interpolation. |
| Open in new tab | When enabled, opens the URL in a new browser tab instead of the current one. |
Script
Executes a custom JavaScript snippet at this point in the flow. Use it for calculations, DOM manipulation, or calling browser APIs.
Configuration
| Field | Description |
|---|---|
| Name | Optional label for the script block. |
| Code | JavaScript to execute. Variables are accessible via {{variable}} syntax or the variables object. |
| Run on client | When enabled, the script runs in the user’s browser. When disabled, it runs server-side. |
| Execute in parent context | When enabled, the script runs in the parent window context (useful inside iframes). |
Wait
Pauses the flow for a configurable number of seconds before continuing. Useful for adding delays between messages.
Configuration
| Field | Description |
|---|---|
| Seconds | How many seconds to wait before advancing. |
| Should pause | When enabled, the wait is a hard pause; when disabled, it’s a display delay only. |
Jump
Jumps execution to a specific group or block elsewhere in the flow, bypassing the normal sequential path.
Configuration
| Field | Description |
|---|---|
| Target group | The group to jump to. |
| Target block | Optional specific block within the target group. |
AB Test
Splits traffic between two paths (A and B) at a configurable percentage. Use it to test different conversation flows or messages.
Configuration
| Field | Description |
|---|---|
| A percent | Percentage of conversations routed to path A (0–100). The remainder go to path B. |
Connect the A and B outputs to different downstream groups or blocks.