i want to prompt with my own dynamic first message with variables how?

I see you want to bypass the default first message in Vapi and use your own dynamic first message with variables. Based on the information I found, there are several ways to do this, but I'd like to understand your specific use case better. Are you trying to: 1. Set up an outbound call with a custom first message containing variables (like customer name)? 2. Configure an inbound call flow where you want to customize the greeting? 3. Use this in a web interface? Also, have you already tried any of the methods mentioned in the [Vapi documentation](https://docs.vapi.ai/assistants/dynamic-variables) such as using

assistantOverrides

with

variableValues

, or setting the

firstMessage

and

firstMessageMode

in your configuration? Sources: - [Vapi Dynamic Variables Documentation](https://docs.vapi.ai/assistants/dynamic-variables) - [Vapi First Message Configuration](https://docs.vapi.ai/quickstart/phone/outbound)

@Vapi Support Bot how to precall data fetch?

I'd like to understand more about what you mean by "precall data fetch" in Vapi. Are you looking to: 1. Fetch customer data before a call starts to use in your dynamic first message? 2. Pre-load information that your assistant can reference during the call? 3. Set up an integration with an external database or CRM to pull information before initiating calls? Also, which type of Vapi implementation are you using (web, inbound phone, outbound phone)? This will help me provide you with the most relevant guidance on pre-call data fetching.

Hey, could you brief me more about your use case and if possible share an example so I can try to help you better?