# Action Button eines Rechnungs Panel erweitern

1. events.xml erweitern

```
<event on="onAdminLoadFooter" fire="My\Plugin\Event\Handler::onAdminLoadFooter" />
```

2. Per PHP Klasse auf das QUIQQER Invoice Event reagieren

```php
<?php

namespace My\Plugin\Event;

class Handler
{
    public static function onAdminLoadFooter()
    {
        echo '
          <script type="text/javascript">
          /* <![CDATA[ */

            require(["qui/QUI"], function(QUI) {
                QUI.addEvent("onQuiqqerInvoiceActionButtonCreate", function(PanelInstance, ButtonInstance) {
                    // my new action
                    ButtonInstance.appendChild({
                        icon  : "fa fa-home",
                        text  : "My new invoice action",
                        events: {
                            onClick: function() {
                                console.log("click");
                            }
                        }
                    });
                });
            });
            
        /* ]]> */
        </script>
        ';
    }
}

```