# \_setCustom

Edit a custom value for an Asset

### Parameters

#### id

The ID of the Asset you wish to set the custom value for.

#### name

The name of the custom field to be set.

#### val

The value to be set.

### Example

```
FM_api('Asset_setCustom', ['id' => '4', 'name' => 'colour', 'val' => 'red'])
```

#### On Success

```
{"ok":1,"asset":{"type_id":"1","meta":"{\"custom\":{\"colour\":\"blue\",\"\":\"blue\"},\"main\":{\"vehicle_reg\":\"NU11TYP\"}}","location_type":"1","location_id":"3","owner_id":"0"},"asset_type":{"id":"1","name":"Fire","meta":"{\"template\":[{\"name\":\"Main\",\"draggable\":[{\"label\":\"Colour\",\"type\":\"none\",\"left\":20,\"top\":30,\"width\":200,\"height\":50,\"data_type\":\"Single-line Input\",\"field_name\":\"colour\"}]}]}","last_edited":"2018-09-27 12:31:59","attrs":"1","rental_type_id":"2"},"field""...
```


---

# Agent Instructions: Querying This Documentation

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Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.fieldmotion.com/fieldmotion-api-docs/asset/_setcustom.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.