> For the complete documentation index, see [llms.txt](https://docs.fieldmotion.com/fieldmotion-api-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.fieldmotion.com/fieldmotion-api-docs/customer/_setcallback.md).

# \_setCallback

Sets the date and time of a Callback for a Customer.

### Parameters

#### id

The ID of the Customer.

#### val

The date and time for the callback, in the format:\
DD-MM-YYYY (e.g "2024-01-24 11:43")

### Example

```
FM_api('Customer_setCallback',[
  'id'=>'683158',
  'val'=>'2024-01-24 11:43'
  ]
);
```

### Result

#### On Success

```
{"ok":"1"}
```

If the "val" parameter value is already set to the Customer:

```
['ok":"1", "msg":"value already set"}
```

#### On Failure

If the "id" parameter is not given a value or has a value less than 1:

```
{"error:":missing or invalid parameter: id"}
```

If the "val" parameter is not given a value:

```
{"error:":missing or invalid parameter: val"}
```

If the "id" parameter value does not match an existing Customer ID:

```
{"error":"customer does not exist"}
```


---

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