---
title: "Storing values for later steps"
description: "Set node (action_set): key-value pairs in scenario state with no client-visible message — flags, context for router and operator."
---

# Storing values for later steps

The **Set** node (`action_set`) writes **key → value** pairs into scenario state (constants or process variables, depending on the template). It does **not** send a chat message: it is an **internal** step for the logic you build on the canvas.

---

## Typical tasks

- Set a **flag** (e.g. registration completed).
- Store a **selected** or **computed** value for the Router or later nodes.
- Prepare **context** before operator connect or another action.

---

## In the editor

1. Add **Set** (`action_set`) from Data / templates.
2. In Node Inspector, set **keys and values** (often with `{{...}}` placeholders).
3. Connect the output to the next node.

Full fields: [Set parameters](/en/scenariobuilder/reference/set-parameters.md).

---

## ⚠️ Ordering relative to operator connect (Fast Line)

If a **Set** (or **Clear constant**) node sits **before** the [connect-to-operator](/en/scenariobuilder/explanation/connect-to-operator-node.md) node — especially in **Fast Line** scenarios — its changes may **not reach** the nodes that run **after** the operator step (for example, an action-jail that reads that constant). The operator-connect step saves dialog state in a **separate cycle** that can overwrite values set immediately before it.

**Rule:** constants that later steps depend on **after** the operator (counters, iterators, flags) should be set/reset with the Set node **after** the connect-to-operator node, not before it.

| Set / Clear constant position | Result |
|-------------------------------|--------|
| **Before** connect-to-operator | The change may be lost — later steps see the old value |
| **After** connect-to-operator | Works reliably — later steps see the new value |

---

## See also

- [Parameter reference](/en/scenariobuilder/reference/set-parameters.md)
- [What is the scenario editor](/en/scenariobuilder/explanation/what-is-scenario-editor.md)
- [Use action in scenario](/en/scenariobuilder/how-to/use-action-in-scenario.md)
- [Actions reference](/en/actionjail/reference/actions-reference.md)