# Create a struct property type

Create and configure a new struct property from the **Object types** page in Ontology Manager. For more information about struct properties, see the [overview](../structs-overview/index.md).

1. In Ontology Manager, open the **Object types** tab in the left sidebar and select an existing object type.
2. In the object type details page, open the **Properties** tab in the left sidebar, and select the **Create property** button on the top right of the **Properties** table.

<img src="../../../assets/a1ae90c8733ddb0c43ae341165f1d988795076153983e466e441841e5bb10b0f.webp" alt="The object type Properties table and 'Property editor' panel."  width="500" />

3. In the **Property editor** panel, add a name and description, and select **Struct** from the **Base type** dropdown menu.

<img src="../../../assets/f1c285d89e6ecef3f7ed1a1954be3db742eaf312765538e9966ce6a818581335.webp" alt="The Base type dropdown with 'Struct' selected." width="500" />

4. Scroll down to the **Data** section and select a **Backing column** from the dropdown.

<img src="../../../assets/936b8650380abbf1057510fadfd45049f60a8a2a740e1b2a94b956f1424369d7.webp" alt="Choose a backing column in the Data section of the Property editor." width="500" />

5. In the **Struct fields** section, select **Add field**, then **New field**.

<img src="../../../assets/268e6b5a44b1aaed47d975caae74afbabdee6ab08550fc5f48e37db5204ff462.webp" alt="Sample struct fields in a struct property type." width="500" />

6. Name the new struct field and optionally add a description.
7. Lastly, map a column from a datasource to the new struct field.