Query a Number in a Webhook

I am using webhooks to call data from AirTable using the AirTable API. I am trying to query a number through the webhook, but I can find no way in the API service to do this.

Is there a way to call a number through a webhook? Is there a different way to code the webhook that will indicate whether it is looking for numbers or text? When I try to call the number data right now there is an error on that query.