# \_setReference

Set the Reference for a Purchase order.

### Parameteres

\###id ID of the purchase order which will have the reference set.

#### reference

The reference to be set for the purchase order.

### Example

```
FM_api('PurchaseOrder_setReference', ['id' => '10', 'reference' => '18'])
```

### Result

#### On Success

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