# INTRODUCE A PARAMETER IN LIST SLOT

**URL:** <https://forum.rasa.com/t/introduce-a-parameter-in-list-slot/25662>\
**Category:** Rasa Open Source\
**Created:** [March 5, 2020, 1:25am UTC](https://forum.rasa.com/t/introduce-a-parameter-in-list-slot/25662 "2020-03-05T01:25:39Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![Robert14](https://avatars.discourse-cdn.com/v4/letter/r/dbc845/32.png) [@Robert14](https://forum.rasa.com/u/Robert14)\
**Post date:** [March 17, 2020, 12:11am UTC](https://forum.rasa.com/t/introduce-a-parameter-in-list-slot/25662/3 "2020-03-17T00:11:40Z")

</div>

of course,

```
class Getcheck(Action):
def name(self):
    return 'action_check'

def run(self,
        dispatcher: CollectingDispatcher,
        tracker: Tracker,
        domain: Dict[Text, Any]) -> List[Dict[Text, Any]]:

     piz=next(tracker.get_latest_entity_values("tipo_p"), None)
     caja= ['hola']
     caja.append(piz)

     dispatcher.utter_message('se a introducido {} correctamente '.format(piz))
     message = {
        "text": "desaria ordenar otra cosa:",
        "quick_replies": [
            {
                "content_type": "text",
                "title": "si",
                "payload": "ordenar",
            }, {
                "content_type": "text",
                "title": "no",
                "payload": "quiero ver el carrito",
            }
        ]
    }
     dispatcher.utter_message(json_message=message)

```

after this first time, if the customer want to add other pizza i need what a tuple add other parameter and print in list slot, the issue is when the costumer accesses for the second time the list change the firs parameter instead of changing it

thanks for you reply

regards 😉

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