---
title: Apply a Parameterized Template During Activation
slug: bhdm/apply-a-parameterized-template-during-activation
createdAt: 2022-09-29T15:48:12.000Z
---

You can apply a parameterized template to edge devices during activation.

# Additional Details

- While applying a parameterized template during activation of an edge device, you can set the variables that affect devices.
- You are asked to supply variables during the activation request confirmation.
- The template variables are changed using the JSON-path and the variable values, and then sent to the edge device using the existing API.

# Step 1: Create a Basic Activation Configuration with Activation Template(s) in Belden Horizon Data Manager

See Step 1-6 of [Set Up an Activation Config](docId\:B5xSej06zoHrCnntQ7Ztj). For Step 3, select a *Parameterized Template*.

# Step 2: Create an Activation Request in Belden Horizon Data Operations

See [Activate an Edge Device](docId\:dbGZkKNgGCs_BSV4I7HFQ).

# Step 3: Approve the Activation Request in Belden Horizon Data Manager

See the **Approve **option of [Requests](docId\:ac57jhb2C874mVuiGsGdt).

# Step 4: Set Variables in Belden Horizon Data Manager

Once **Approved, **the* Set Variables* dialog box appears. Enter values for the variables in each variable field, and then click **Apply**.

The Stage Activation icon under Status shows a green check mark, and then the Stage Provision icon under *Status *shows a green check mark.

The activation for the device is complete.

# Step 5: Verifying Template Parameters are Applied to an Edge Device in Belden Horizon Data Operations

There are many types of possible variables. The following verification procedure is an example.

**To verify template parameters are applied to an edge device in Belden Horizon Data Operations: **

1. From another browser tab, log in to Belden Horizon Data Operations.
2. From the Navigation panel, select **DeviceHub**.
   The Edge Devices pane appears.
3. Select the device for which the template was applied and ensure that the variables entered in the *Set Variables* dialog box appear correctly.

:::hint{type="info"}
**Example**: If `device_name `is a variable, make sure that the name for the device is correct. In this case, `PLC1`.
:::