# Using REST API in Native Screens

#### Step 1: Select a Native Screen Element

1. Go to **Screens** in the Twinr Builder
2. Open any screen (e.g., Home, Shop)
3. Select a supported element such as:
   * Product List
   * List
   * Banner etc.

***

#### Step 2: Choose Data Source

<figure><img src="/files/6o5PikxRHnjbjWeEqmiE" alt="" width="285"><figcaption></figcaption></figure>

1. In the element’s **Content** panel, locate **Data Source**
2. Select **API** (instead of Static)
3. Choose the required API from the **API Call** dropdown

#### Step 3: Configure API Response Mapping

![](/files/lkaFcOAyWpf6njzG29Kq).  ![](/files/wjLbTEOi2vyakhPiQkE8)

1. Click **Configure API Response**
2. The configuration dialog opens with:
   * **Response Preview** (live API data)
   * **Response Mapping** options
3. Map API response fields to UI properties, such as:
   * Image URL
   * Title
   * Description
   * Background color (optional)
4. Provide a **Default Image URL** to handle missing images
5. Click **Save**

> Once mapping is completed, the element is automatically populated with API data.

***

#### Step 4: Preview and Publish

* The mapped data appears instantly in the **Preview**
* The same data is rendered on **mobile devices**
* Any future API updates reflect automatically without manual changes


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