Hello, can i use custom variables during making call inside customer ? im calling in batches and can only add 1 assistantOverrides . Can i use variables inside customer, or can i add assistantOverrides inside customer?

curl -X POST https://api.vapi.ai/call \
     -H "Authorization: Bearer f215f296-3be5-4021-9306-55137af2eb06" \
     -H "Content-Type: application/json" \
     -d '{
  "customers": [
    {
      "number": "13123123123",
      "name": "jon",
      "custom_lastname": "carpenter",
      "numberE164CheckEnabled": true
    },
    {
      "number": "13123423123123",
      "name": "jon1",
      "custom_lastname": "carpenter1",
      "numberE164CheckEnabled": true
    }
  ],
}'

or what can i do in this case, please help

Hi there! 👋 I'm unable to confirm if your exact batched call structure with the "customers" array is correct, but I can definitely help with your questions about custom variables and assistantOverrides! Based on the information I found, you cannot add custom variables directly inside the customer object, and you also cannot add assistantOverrides inside the customer object. Let me explain why and what alternatives you have. ## Custom Variables in the Customer Object According to information from [Discord discussions](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1344652901791961211), the

customer

object has a limited set of predefined properties. When someone tried to add a custom property to the customer object, they received an error:

"customer.property company_name should not exist"

. The

CustomerUserEditable

class defines only these available fields: -

number

-

numberE164CheckEnabled

-

sipUri

-

name

-

extension

So your

custom_lastname

property would likely cause an error. ## AssistantOverrides Inside Customer Object The

assistantOverrides

and

customer

are separate entities in the API call structure and cannot be nested. They exist at the same level in the request body, not with one inside the other. ## How to Use Custom Variables The proper way to use custom variables is through the

assistantOverrides.variableValues

object at the top level of your request:

json
{
  "assistantId": "your-assistant-id",
  "assistantOverrides": {
    "variableValues": {
      "lastname": "carpenter"
    }
  },
  "customer": {
    "number": "+1xxxxxxxxxx",
    "name": "jon"
  },
  "phoneNumberId": "your-phone-id"
}

Then in your assistant's prompts, you can use

{{lastname}}

to access this variable. ## Alternative Approaches For your batched calls scenario, you might consider:

More on

customer.assistantOverrides.variableValues

https://cdn.discordapp.com/attachments/1360134581113589921/1360137220505211030/image.png?ex=67fa05ff&is=67f8b47f&hm=2f755c5f7a276d01e40d78a493475cc1b2fb3187c828db308ceb316dc3352a13&

when m making batch call , i can use 1 assistanOverrides for all customers in batch . how can i have different custom variables for each customer in batch ?

Hey Hackett, as of now, you can only pass a single record for a customer object. You cannot pass multiples, so you have to use a property named "customer" of type record only.