> 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/marketingexpense/_setsource.md).

# \_setSource

Sets one desired Marketing Source to be connected to a Marketing Expense

### Parameters

#### id

The ID of the Marketing Expense being modified

#### val

The ID of the Marketing Source being linked to said Marketing Expense

### Example

```
FM_api(
    'MarketingExpense_setSource',[
      'id' => '19',
      'val' => '10'
    ]
);
```

### Results

#### On Success

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

#### On Failure

If the "id" parameter is not set

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

If the "val" parameter is not set

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